Pub Date : 2026-01-15eCollection Date: 2025-12-01DOI: 10.1016/j.redii.2025.100064
Camille Cathelineau, Marwane Ghemame, Antoine Le Boëdec, Béatrice Carsin-Nicol, Hervé Saint-Jalmes, Pierre-Antoine Éliat, Frédéric Mouriaux, Jean-Christophe Ferré
Rationale and objectives: The presence of ferromagnetic foreign bodies in the intraorbital area, eyelids, or intraorbital fat of an examined subject represents a contraindication to magnetic resonance imaging (MRI). We sought to measure the displacement of one or two intraocular and intraorbital ferromagnetic foreign bodies in ex vivo porcine heads following 1.5 T MRI scan compared to 5-min walk test.
Materials and methods: In this ex-vivo controlled laboratory study, a total of 48 1-, 2-, and 4-mm steel balls were surgically implanted into suprachoroidal, intraorbital fat, intrapalpebral, and intravitreal locations of 36 fresh porcine heads. Ferromagnetic foreign bodies displacement was measured by comparing computed tomography scan before and after both a 5-min walk test to simulate handling-related movement and 1.5 T MRI scan. Comparison of groups was performed using the non-parametric Mann-Whitney-Wilcoxon test.
Results: Global median displacement after 5-min walk test was 0.8 mm. Compared to the control group, the ferromagnetic foreign bodies displacement after MRI was significant for the suprachoroidal location with single ferromagnetic foreign body (2.3 mm, p = 0.0282), and for the intravitreal location with single ferromagnetic foreign body (4.5 mm, p = 0.0282) and double ferromagnetic foreign bodies (5.0 mm, p = 0.0282). Compared to the control group, ferromagnetic foreign body displacement after MRI was significant for the double 2-mm ferromagnetic foreign bodies (2.2 mm, p = 0.0130), single 4-mm ferromagnetic foreign body (4.9 mm, p = 0.0107), and double 4-mm ferromagnetic foreign bodies (9.0 mm, p = 0.0084).
Conclusion: Ferromagnetic foreign body displacements after 1.5 T magnetic field exposition were not significant for extraocular intrapalpebral and intraorbital fat locations. Neither were there significant displacements for 1-mm ferromagnetic foreign body, irrespective of the location. On the other hand, the presence of two objects increased the displacement of 2- and 4-mm ferromagnetic foreign bodies.
理由和目的：在被检查对象的眶内区域、眼睑或眶内脂肪中存在铁磁性异物代表磁共振成像（MRI）的禁忌症。与5分钟步行测试相比，我们试图在1.5 T MRI扫描后测量离体猪头中一个或两个眼内和眶内铁磁异物的位移。材料和方法：在本离体对照实验室研究中，共将48个1、2和4毫米钢球手术植入36个新鲜猪头的脉络膜上、眶内脂肪、睑内和玻璃体内。通过比较模拟处理相关运动的5分钟步行测试和1.5 T MRI扫描前后的计算机断层扫描来测量铁磁性异物的位移。组间比较采用非参数Mann-Whitney-Wilcoxon检验。结果：5分钟步行试验后的整体中位位移为0.8 mm。与对照组相比，单铁磁异物在脉络膜上定位（2.3 mm, p = 0.0282）、单铁磁异物在玻璃体内定位（4.5 mm, p = 0.0282）和双铁磁异物在玻璃体内定位（5.0 mm, p = 0.0282） MRI后铁磁异物移位显著。与对照组相比，MRI后双2-mm铁磁异物（2.2 mm, p = 0.0130）、单4-mm铁磁异物（4.9 mm, p = 0.0107）、双4-mm铁磁异物（9.0 mm, p = 0.0084）的铁磁异物位移显著。结论：1.5 T磁场暴露后铁磁异物移位对眼外、睑内、眶内脂肪部位无显著影响。无论位置如何，1毫米铁磁异物也没有明显的位移。另一方面，两个物体的存在增加了2和4毫米铁磁异物的位移。
{"title":"Displacement of intraorbital ferromagnetic foreign bodies induced by magnetic resonance imaging: Quantification using an animal model.","authors":"Camille Cathelineau, Marwane Ghemame, Antoine Le Boëdec, Béatrice Carsin-Nicol, Hervé Saint-Jalmes, Pierre-Antoine Éliat, Frédéric Mouriaux, Jean-Christophe Ferré","doi":"10.1016/j.redii.2025.100064","DOIUrl":"10.1016/j.redii.2025.100064","url":null,"abstract":"<p><strong>Rationale and objectives: </strong>The presence of ferromagnetic foreign bodies in the intraorbital area, eyelids, or intraorbital fat of an examined subject represents a contraindication to magnetic resonance imaging (MRI). We sought to measure the displacement of one or two intraocular and intraorbital ferromagnetic foreign bodies in ex vivo porcine heads following 1.5 T MRI scan compared to 5-min walk test.</p><p><strong>Materials and methods: </strong>In this ex-vivo controlled laboratory study, a total of 48 1-, 2-, and 4-mm steel balls were surgically implanted into suprachoroidal, intraorbital fat, intrapalpebral, and intravitreal locations of 36 fresh porcine heads. Ferromagnetic foreign bodies displacement was measured by comparing computed tomography scan before and after both a 5-min walk test to simulate handling-related movement and 1.5 T MRI scan. Comparison of groups was performed using the non-parametric Mann-Whitney-Wilcoxon test.</p><p><strong>Results: </strong>Global median displacement after 5-min walk test was 0.8 mm. Compared to the control group, the ferromagnetic foreign bodies displacement after MRI was significant for the suprachoroidal location with single ferromagnetic foreign body (2.3 mm, <i>p</i> = 0.0282), and for the intravitreal location with single ferromagnetic foreign body (4.5 mm, <i>p</i> = 0.0282) and double ferromagnetic foreign bodies (5.0 mm, <i>p</i> = 0.0282). Compared to the control group, ferromagnetic foreign body displacement after MRI was significant for the double 2-mm ferromagnetic foreign bodies (2.2 mm, <i>p</i> = 0.0130), single 4-mm ferromagnetic foreign body (4.9 mm, <i>p</i> = 0.0107), and double 4-mm ferromagnetic foreign bodies (9.0 mm, <i>p</i> = 0.0084).</p><p><strong>Conclusion: </strong>Ferromagnetic foreign body displacements after 1.5 T magnetic field exposition were not significant for extraocular intrapalpebral and intraorbital fat locations. Neither were there significant displacements for 1-mm ferromagnetic foreign body, irrespective of the location. On the other hand, the presence of two objects increased the displacement of 2- and 4-mm ferromagnetic foreign bodies.</p>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"16 ","pages":"100064"},"PeriodicalIF":0.0,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12830308/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146055307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-08-14DOI: 10.1016/j.redii.2025.100063
Kevin Maarek , Philippine Cordelle , Tom Vesoul , Pascal Zille , Gaspard d'Assignies , Antoine Feydy , Guillaume Herpe
Background
Magnetic resonance imaging (MRI) is a sensitive imaging modality for identifying knee bone marrow edema, a significant biomarker in osteoarthritis and injury assessment. The precision of bone marrow edema detection is contingent upon the radiologist's expertise, and segmentation efficiency demands substantial time.
Purpose
This study evaluated artificial intelligence's (AI) impact on enhancing general radiologists' diagnostic accuracy for bone marrow edema detection in knee MRI.
Materials and methods
A multicenter, multireader, multicase methodology was used in this retrospective diagnostic study, which relied on an external dataset of 198 examinations. Mean age was 46 years with a standard deviation (SD) of 15.8 years and a female/male ratio of 49 %/51 %.
An AI algorithm from the AI solution Keros, comprising three orientation-specific 3D-UNet models, was deployed for bone marrow edema segmentation on T2/proton density with fat suppression sequences.
The ground truth was set by expert musculoskeletal radiologists.
The purpose was to externally validate the AI algorithm and compare the performance and speed of bone marrow edema identification by less experienced radiologists when using the algorithm versus not using it
Results
A total of 184 patients were included. With AI, readers’ sensitivity for bone marrow edema detection significantly increased by 6.1 % from 79.3 % without AI (95 % confidence interval [95 % CI]: 77.2–80.3 %) to 85.4 % (95 % CI: 84–86.2 %) with AI (p = 0). Specificity significantly increased by 5 % with AI assistance, reaching 93.9 % (95 % CI: 93.7–94.6 %) from 88.9 % (95 % CI: 88.6–89.4 %) (p = 0). Reading times were reduced by 42 % (0.66 min per exam, p = 3.81e-41).
Conclusion
AI significantly increased the sensitivity and specificity of bone marrow edema detection for general radiologists and shortened the reading process. AI-assisted detection of bone edema in the knee also opens up new perspectives for the longitudinal monitoring of patients with knee osteoarthritis.
{"title":"Enhancing knee MRI bone marrow lesion detection with artificial intelligence: An external validation study","authors":"Kevin Maarek , Philippine Cordelle , Tom Vesoul , Pascal Zille , Gaspard d'Assignies , Antoine Feydy , Guillaume Herpe","doi":"10.1016/j.redii.2025.100063","DOIUrl":"10.1016/j.redii.2025.100063","url":null,"abstract":"<div><h3>Background</h3><div>Magnetic resonance imaging (MRI) is a sensitive imaging modality for identifying knee bone marrow edema, a significant biomarker in osteoarthritis and injury assessment. The precision of bone marrow edema detection is contingent upon the radiologist's expertise, and segmentation efficiency demands substantial time.</div></div><div><h3>Purpose</h3><div>This study evaluated artificial intelligence's (AI) impact on enhancing general radiologists' diagnostic accuracy for bone marrow edema detection in knee MRI.</div></div><div><h3>Materials and methods</h3><div>A multicenter, multireader, multicase methodology was used in this retrospective diagnostic study, which relied on an external dataset of 198 examinations. Mean age was 46 years with a standard deviation (SD) of 15.8 years and a female/male ratio of 49 %/51 %.</div><div>An AI algorithm from the AI solution Keros, comprising three orientation-specific 3D-UNet models, was deployed for bone marrow edema segmentation on T2/proton density with fat suppression sequences.</div><div>The ground truth was set by expert musculoskeletal radiologists.</div><div>The purpose was to externally validate the AI algorithm and compare the performance and speed of bone marrow edema identification by less experienced radiologists when using the algorithm versus not using it</div></div><div><h3>Results</h3><div>A total of 184 patients were included. With AI, readers’ sensitivity for bone marrow edema detection significantly increased by 6.1 % from 79.3 % without AI (95 % confidence interval [95 % CI]: 77.2–80.3 %) to 85.4 % (95 % CI: 84–86.2 %) with AI (<em>p</em> = 0). Specificity significantly increased by 5 % with AI assistance, reaching 93.9 % (95 % CI: 93.7–94.6 %) from 88.9 % (95 % CI: 88.6–89.4 %) (<em>p</em> = 0). Reading times were reduced by 42 % (0.66 min per exam, <em>p</em> = 3.81e-41).</div></div><div><h3>Conclusion</h3><div>AI significantly increased the sensitivity and specificity of bone marrow edema detection for general radiologists and shortened the reading process. AI-assisted detection of bone edema in the knee also opens up new perspectives for the longitudinal monitoring of patients with knee osteoarthritis.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"15 ","pages":"Article 100063"},"PeriodicalIF":0.0,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144829557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Percutaneous microwave ablation is an effective and minimally invasive treatment for small tumors. To achieve local disease control, the entire tumor and a surrounding safety margin must be destroyed. Power and application time are chosen based on manufacturer-provided data, usually obtained from ex vivo animal models. However, ex vivo tissues differ from in vivo condition due to compositional changes and absence of heat dissipation by blood flow. This study aimed to compare in vivo ablation zone sizes in swine with those predicted by the device manufacturer.
Methods
Five pigs underwent 40 microwave ablation procedures using various power-time-organ combinations; 18 hepatic and 20 renal zones were evaluable. All procedures were performed with devices from a single manufacturer (ECO Microwave System Co, Nanjing, China). After euthanasia, the ablation zones were excised and sliced. For each ablation, the slice showing the largest dimensions was selected to measure x and y diameters and used to compute the ablated surface area.
Results
For seven of eight power-time-organ combinations, significant differences were found between predicted and measured surface areas (p < 0.05), with deviations ranging from –45 % to +54 %. The overall mean absolute differences between measured and predicted ablation sizes in the x and y dimensions and the ablation surface area were 7.6 ± 4.6 mm (28 % ± 19 %), 5.8 ± 4.3 mm (18 % ± 13 %) and 273 ± 210 mm² (39 % ± 34 %), respectively.
Conclusion
Manufacturer-provided predictive data for microwave ablation zone size may lack reliability. Intraoperative and postoperative monitoring of ablation zone size is crucial to ensure complete tumor destruction with adequate margins.
{"title":"In vivo percutaneous microwave ablation with ECO system in swine kidney and liver: comparison of ablation-zone size to manufacturer predictions and assessment of new antenna design","authors":"Théo Bonnefoy , Georges Tarris , Kévin Guillen , Olivia Poupardin , Olivier Chevallier , Ludwig Serge Aho Glele , Jean-Michel Correas , Romaric Loffroy","doi":"10.1016/j.redii.2025.100061","DOIUrl":"10.1016/j.redii.2025.100061","url":null,"abstract":"<div><h3>Aim</h3><div>Percutaneous microwave ablation is an effective and minimally invasive treatment for small tumors. To achieve local disease control, the entire tumor and a surrounding safety margin must be destroyed. Power and application time are chosen based on manufacturer-provided data, usually obtained from ex vivo animal models. However, ex vivo tissues differ from in vivo condition due to compositional changes and absence of heat dissipation by blood flow. This study aimed to compare in vivo ablation zone sizes in swine with those predicted by the device manufacturer.</div></div><div><h3>Methods</h3><div>Five pigs underwent 40 microwave ablation procedures using various power-time-organ combinations; 18 hepatic and 20 renal zones were evaluable. All procedures were performed with devices from a single manufacturer (ECO Microwave System Co, Nanjing, China). After euthanasia, the ablation zones were excised and sliced. For each ablation, the slice showing the largest dimensions was selected to measure x and y diameters and used to compute the ablated surface area.</div></div><div><h3>Results</h3><div>For seven of eight power-time-organ combinations, significant differences were found between predicted and measured surface areas (<em>p</em> < 0.05), with deviations ranging from –45 % to +54 %. The overall mean absolute differences between measured and predicted ablation sizes in the x and y dimensions and the ablation surface area were 7.6 ± 4.6 mm (28 % ± 19 %), 5.8 ± 4.3 mm (18 % ± 13 %) and 273 ± 210 mm² (39 % ± 34 %), respectively.</div></div><div><h3>Conclusion</h3><div>Manufacturer-provided predictive data for microwave ablation zone size may lack reliability. Intraoperative and postoperative monitoring of ablation zone size is crucial to ensure complete tumor destruction with adequate margins.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"14 ","pages":"Article 100061"},"PeriodicalIF":0.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-27DOI: 10.1016/j.redii.2025.100062
Joël Greffier , Maxime Pastor , Quentin Durand , Renaud Sales , Chris Serrand , Jean-Paul Beregi , Djamel Dabli , Julien Frandon
Purpose
To compare the impact of a deep-learning image reconstruction algorithm (Precise Image) with an iterative reconstruction algorithm on image quality and detection of solid lung lesions in chest CT images.
Methods
All consecutive patients with at least one solid lung lesion diagnosed between December 2021 and February 2022 were retrospectively included. Images were reconstructed using Level 4 of the iterative reconstruction algorithm (i4) and the Standard/Smooth/Smoother levels of the deep-learning image reconstruction algorithm. Mean attenuation and standard deviation were measured by placing regions of interest in fat, muscle, trachea and solid lung lesions. The contrast-to-noise ratio between the lesion and the trachea was computed. Two radiologists assessed image noise and image smoothness, overall image quality and confidence diagnostic level using Likert scales. One radiologist also measured the large axis of the largest lesion. Statistical analyses was performed to compare outcomes obtained with the different algorithms.
Results
Thirty patients with a mean age of 70.0 ± 9.0 years (17 men) were included. The mean CTDIvol was 6.3 ± 2.1 mGy. For all tissues, the contrast-to-noise ratio was similar for i4 and Standard level (p > 0.05) but increased significantly with other deep-learning image reconstruction levels compared to i4 (p < 0.05) and increased significantly from Standard to Smoother. Radiologists rated the image noise with a similar score between i4 and Standard level but decreased significantly between i4 and other deep-learning image reconstruction levels (p < 0.05) and from Standard to Smoother levels (p < 0.01). Overall image quality score were highest for the Smooth and Smoother levels.
Conclusion
Smooth and Smoother levels may now be used in clinical practice for chest CT acquisitions in solid lung lesion follow-up.
{"title":"Impact of a deep-learning image reconstruction algorithm on image quality and detection of solid lung lesions","authors":"Joël Greffier , Maxime Pastor , Quentin Durand , Renaud Sales , Chris Serrand , Jean-Paul Beregi , Djamel Dabli , Julien Frandon","doi":"10.1016/j.redii.2025.100062","DOIUrl":"10.1016/j.redii.2025.100062","url":null,"abstract":"<div><h3>Purpose</h3><div>To compare the impact of a deep-learning image reconstruction algorithm (Precise Image) with an iterative reconstruction algorithm on image quality and detection of solid lung lesions in chest CT images.</div></div><div><h3>Methods</h3><div>All consecutive patients with at least one solid lung lesion diagnosed between December 2021 and February 2022 were retrospectively included. Images were reconstructed using Level 4 of the iterative reconstruction algorithm (i4) and the Standard/Smooth/Smoother levels of the deep-learning image reconstruction algorithm. Mean attenuation and standard deviation were measured by placing regions of interest in fat, muscle, trachea and solid lung lesions. The contrast-to-noise ratio between the lesion and the trachea was computed. Two radiologists assessed image noise and image smoothness, overall image quality and confidence diagnostic level using Likert scales. One radiologist also measured the large axis of the largest lesion. Statistical analyses was performed to compare outcomes obtained with the different algorithms.</div></div><div><h3>Results</h3><div>Thirty patients with a mean age of 70.0 ± 9.0 years (17 men) were included. The mean CTDI<sub>vol</sub> was 6.3 ± 2.1 mGy. For all tissues, the contrast-to-noise ratio was similar for i4 and Standard level (<em>p</em> > 0.05) but increased significantly with other deep-learning image reconstruction levels compared to i4 (<em>p</em> < 0.05) and increased significantly from Standard to Smoother. Radiologists rated the image noise with a similar score between i4 and Standard level but decreased significantly between i4 and other deep-learning image reconstruction levels (<em>p</em> < 0.05) and from Standard to Smoother levels (<em>p</em> < 0.01). Overall image quality score were highest for the Smooth and Smoother levels.</div></div><div><h3>Conclusion</h3><div>Smooth and Smoother levels may now be used in clinical practice for chest CT acquisitions in solid lung lesion follow-up.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"14 ","pages":"Article 100062"},"PeriodicalIF":0.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-22DOI: 10.1016/j.redii.2025.100059
Jérémy Dana , Evan McNabb , Juan Castro , Ibtisam Al-Qanoobi , Yoshie Omiya , Kenny Ah-Lan , Véronique Fortier , Giovanni Artho , Caroline Reinhold , Simon Gauvin
Objective
To assess the impact of a commercially available deep learning reconstruction (DLR) algorithm on qualitative and radiomics analyses in prostate MRI.
Methods
This single-centre retrospective cohort included 25 consecutive patients who underwent a prostate MRI (1.5 T) in 2022. T2-weighted (T2WI), diffusion-weighted (DWI; b = 50, 1000, extrapolated 2000 s/mm2) and apparent diffusion coefficient (ADC) images were reconstructed using DLR and standard (non-DLR) techniques. The two sets were mixed and blind-reviewed independently by six radiologists. Images were qualitatively scored according to PI-QUAL score, overall image quality, diagnostic confidence, anatomical conspicuity, artifact, and noise. Transition and peripheral zones were segmented and radiomics features extracted from region-of-interests using Pyradiomics package. Qualitative criteria and radiomics were compared using a pairwise Wilcoxon signed-rank test.
Results
PI-QUAL score was not significantly different (p = 0.32). Overall image quality was not significantly different (p = 0.21 on T2WI and 0.56 on DWI/ADC). Noise was lower on DLR images for T2WI (p < 0.01) and DWI/ADC (p = 0.04). Diagnostic confidence in excluding clinically significant cancer (PI-RADS ≥ 3) in the transition zone was lower with DLR images (p = 0.02). In the transition zone, 89/93 (96 %) of the radiomics features were significantly different between non-DLR and DLR images on T2WI, 68/93 (73 %) on DWI b-2000 s/mm2, and 55/93 (59 %) on ADC images. In the peripheral zone, 91/93 (98 %) were significantly different on T2WI, 50/93 (54 %) on DWI b-2000 s/mm2, and 70/93 (75 %) on ADC images.
Conclusion
Radiomics features were significantly different on DLR images which should encourage caution for clinical and research purposes. DLR algorithm decreases noise while preserving overall image quality.
{"title":"Deep learning reconstruction in biparametric prostate MRI: Impact on qualitative and radiomics analyses","authors":"Jérémy Dana , Evan McNabb , Juan Castro , Ibtisam Al-Qanoobi , Yoshie Omiya , Kenny Ah-Lan , Véronique Fortier , Giovanni Artho , Caroline Reinhold , Simon Gauvin","doi":"10.1016/j.redii.2025.100059","DOIUrl":"10.1016/j.redii.2025.100059","url":null,"abstract":"<div><h3>Objective</h3><div>To assess the impact of a commercially available deep learning reconstruction (DLR) algorithm on qualitative and radiomics analyses in prostate MRI.</div></div><div><h3>Methods</h3><div>This single-centre retrospective cohort included 25 consecutive patients who underwent a prostate MRI (1.5 T) in 2022. T2-weighted (T2WI), diffusion-weighted (DWI; b = 50, 1000, extrapolated 2000 s/mm<sup>2</sup>) and apparent diffusion coefficient (ADC) images were reconstructed using DLR and standard (non-DLR) techniques. The two sets were mixed and blind-reviewed independently by six radiologists. Images were qualitatively scored according to PI-QUAL score, overall image quality, diagnostic confidence, anatomical conspicuity, artifact, and noise. Transition and peripheral zones were segmented and radiomics features extracted from region-of-interests using Pyradiomics package. Qualitative criteria and radiomics were compared using a pairwise Wilcoxon signed-rank test.</div></div><div><h3>Results</h3><div>PI-QUAL score was not significantly different (<em>p</em> = 0.32). Overall image quality was not significantly different (<em>p</em> = 0.21 on T2WI and 0.56 on DWI/ADC). Noise was lower on DLR images for T2WI (<em>p</em> < 0.01) and DWI/ADC (<em>p</em> = 0.04). Diagnostic confidence in excluding clinically significant cancer (PI-RADS ≥ 3) in the transition zone was lower with DLR images (p = 0.02). In the transition zone, 89/93 (96 %) of the radiomics features were significantly different between non-DLR and DLR images on T2WI, 68/93 (73 %) on DWI b-2000 s/mm<sup>2</sup>, and 55/93 (59 %) on ADC images. In the peripheral zone, 91/93 (98 %) were significantly different on T2WI, 50/93 (54 %) on DWI b-2000 s/mm<sup>2</sup>, and 70/93 (75 %) on ADC images.</div></div><div><h3>Conclusion</h3><div>Radiomics features were significantly different on DLR images which should encourage caution for clinical and research purposes. DLR algorithm decreases noise while preserving overall image quality.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"14 ","pages":"Article 100059"},"PeriodicalIF":0.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-20DOI: 10.1016/j.redii.2025.100060
Gonnie C.M. van Erp , Pim Hendriks , Sophie A. van den Hurk , Hannah F. Winder , Willemijn P.M. Scholtes , Lara B.E.M. De Bats , Jouke Dijkstra , Mark C. Burgmans
Purpose
To compare the effectiveness of hydrodissection using 0.9 % NaCl (saline) or 5 % dextrose in water during microwave ablation at different hydrodissection fluid thicknesses, in an ex vivo experimental set-up.
Methods
Two porcine liver parts were placed in a plastic container simulating a superficial liver ablation with adjacent tissue. The space between the livers was filled with either saline or 5 % dextrose in water. Microwave ablation was performed 4 min at 100 W, at 15 mm from the liver surface. Three thermocouples were used to determine the heat propagation: (1) between the microwave ablation antenna and liver surface; (2) 5 mm from the surface of the adjacent tissue; (3) 15 mm from the surface of the adjacent tissue. Forty experiments were performed using hydrodissection fluid thicknesses ranging from 1 to 10 mm. The maximum temperature increase for each thermocouple was determined. A Spearman’s correlation analysis assessed the relationship between the hydrodissection fluid thickness (in millimeters) and the temperature increase (in degrees Celsius) per fluid.
Results
At 5 mm within the adjacent tissue, use of 1 mm hydrodissection fluid thickness with 5 % dextrose in water resulted in less temperature increase (4.6 °C) compared to saline (6.8 °C). Additionally, at this distance, a negative correlation was observed between hydrodissection fluid thickness and temperature increase for both saline hydrodissection (r(18) = −0.96, p < 0.001) and 5 % dextrose in water hydrodissection (r(18) = -0.81, p < 0.001), which differs significantly (p = 0.011).
Conclusion
Results from this experimental ex vivo study suggest that 5 % dextrose in water may protect adjacent critical structures better from heating during microwave ablation than saline.
目的在离体实验装置中，比较0.9% NaCl（生理盐水）和5%葡萄糖水溶液在不同水解剖液厚度下微波消融时的效果。方法将2个猪肝部位置于塑料容器中，模拟肝脏浅表消融。用生理盐水或5%葡萄糖水填充肝脏之间的空隙。在距肝表面15mm处，100 W微波消融4分钟。采用三个热电偶来测定热传播：(1)微波消融天线与肝脏表面之间的热传播；(2)距邻近组织表面5mm；(3)离邻近组织表面15mm。采用1至10毫米的液体厚度进行了40次实验。确定了每个热电偶的最大温升。Spearman的相关性分析评估了水力分解液厚度（单位为毫米）与每种液体的温度升高（单位为摄氏度）之间的关系。结果在5 mm的邻近组织内，使用1 mm厚度的水解剖液加5%的葡萄糖，与盐水（6.8°C）相比，温度升高（4.6°C）较小。此外，在这一距离上，盐水水解液厚度与温度升高呈负相关(r(18) = - 0.96, p <；0.001)和5%葡萄糖在水水解中的作用(r(18) = -0.81, p <；0.001)，差异显著（p = 0.011）。结论体外实验结果表明，5%葡萄糖水溶液对微波消融过程中邻近关键结构的保护作用优于生理盐水。
{"title":"Hydrodissection in microwave ablation: the effectiveness of 0.9 % NaCl versus 5 % dextrose in an ex vivo experimental set-up","authors":"Gonnie C.M. van Erp , Pim Hendriks , Sophie A. van den Hurk , Hannah F. Winder , Willemijn P.M. Scholtes , Lara B.E.M. De Bats , Jouke Dijkstra , Mark C. Burgmans","doi":"10.1016/j.redii.2025.100060","DOIUrl":"10.1016/j.redii.2025.100060","url":null,"abstract":"<div><h3>Purpose</h3><div>To compare the effectiveness of hydrodissection using 0.9 % NaCl (saline) or 5 % dextrose in water during microwave ablation at different hydrodissection fluid thicknesses, in an ex vivo experimental set-up.</div></div><div><h3>Methods</h3><div>Two porcine liver parts were placed in a plastic container simulating a superficial liver ablation with adjacent tissue. The space between the livers was filled with either saline or 5 % dextrose in water. Microwave ablation was performed 4 min at 100 W, at 15 mm from the liver surface. Three thermocouples were used to determine the heat propagation: (1) between the microwave ablation antenna and liver surface; (2) 5 mm from the surface of the adjacent tissue; (3) 15 mm from the surface of the adjacent tissue. Forty experiments were performed using hydrodissection fluid thicknesses ranging from 1 to 10 mm. The maximum temperature increase for each thermocouple was determined. A Spearman’s correlation analysis assessed the relationship between the hydrodissection fluid thickness (in millimeters) and the temperature increase (in degrees Celsius) per fluid.</div></div><div><h3>Results</h3><div>At 5 mm within the adjacent tissue, use of 1 mm hydrodissection fluid thickness with 5 % dextrose in water resulted in less temperature increase (4.6 °C) compared to saline (6.8 °C). Additionally, at this distance, a negative correlation was observed between hydrodissection fluid thickness and temperature increase for both saline hydrodissection (<em>r</em>(18) = −0.96, <em>p</em> < 0.001) and 5 % dextrose in water hydrodissection (<em>r</em>(18) = -0.81, <em>p</em> < 0.001), which differs significantly (<em>p</em> = 0.011).</div></div><div><h3>Conclusion</h3><div>Results from this experimental ex vivo study suggest that 5 % dextrose in water may protect adjacent critical structures better from heating during microwave ablation than saline.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"14 ","pages":"Article 100060"},"PeriodicalIF":0.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01DOI: 10.1016/j.redii.2025.100054
Fabien de Oliveira , Jean-Paul Beregi , Hugo Potier , Thorgal Brun , Chris Serrand , Julien Frandon
Objective
There is a lack of knowledge about radiology among medical students at the start of their curriculum. The optimal teaching method for radiological basics remains uncertain. We conducted a controlled trial to compare the effectiveness of full active learning and hybrid lecture-based teaching methods.
Methods
All second-year medical students at Nîmes University Hospital (Nîmes, France) were invited to participate in a training session in the radiology unit. Volunteers were divided into hybrid lecture-based and full active learning groups. The hybrid lecture-based group received a lecture-based session followed by a unit visit, while the full active learning group utilized a structured form with progressive objectives during the visit. Pretests, immediate post-tests, and two-week follow-up tests were conducted. Short-term progression was the primary outcome, with secondary objectives including mid-term acquisition and associated factors.
Results
51 students participated, with 20 in the hybrid lecture-based group and 31 in the full active learning group. Both groups exhibited significant progression between the first and second tests (+8.48 and +2.52 respectively, p < 0.01). The hybrid lecture-based group showed significantly greater mean progression (p < 0.01). Mid-term results indicated score decrease particularly in the hybrid lecture-based group, but it still maintained significantly superior performance (15.02/20 versus 12.33/20 for full active learning group, p < 0.01).
Conclusion
The hybrid pedagogical method yielded superior results in teaching second-year medical students the basics of radiology compared to the full active learning teaching method.
目的医学生在课程开始时对放射学知识缺乏了解。放射学基础知识的最佳教学方法仍不确定。我们进行了一项对照试验，以比较完全主动学习和混合授课教学方法的有效性。方法邀请法国 mes大学医院（n mes, France）所有二年级医学生参加放射科培训。志愿者被分为混合型讲座组和完全主动学习组。混合型以讲座为基础的小组接受了以讲座为基础的课程，然后进行了单元访问，而完全主动学习组在访问期间使用了具有渐进目标的结构化形式。进行了预测试、即时后测试和两周的随访测试。短期进展是主要结果，次要目标包括中期习得和相关因素。结果51名学生参与，其中20人在混合式授课组，31人在完全主动学习组。两组在第一次和第二次测试之间均表现出显著进展(分别为+8.48和+2.52,p <；0.01)。混合授课组的平均进展显著提高(p <；0.01)。中期结果显示混合型授课组得分下降尤其明显，但仍保持显著优势（15.02/20 vs 12.33/20）；0.01)。结论混合教学法对二年级医学生放射学基础知识的教学效果优于全主动学习教学法。
{"title":"Comparing active teaching to hybrid lecture-based method for learning radiology basics: A single center controlled study","authors":"Fabien de Oliveira , Jean-Paul Beregi , Hugo Potier , Thorgal Brun , Chris Serrand , Julien Frandon","doi":"10.1016/j.redii.2025.100054","DOIUrl":"10.1016/j.redii.2025.100054","url":null,"abstract":"<div><h3>Objective</h3><div>There is a lack of knowledge about radiology among medical students at the start of their curriculum. The optimal teaching method for radiological basics remains uncertain. We conducted a controlled trial to compare the effectiveness of full active learning and hybrid lecture-based teaching methods.</div></div><div><h3>Methods</h3><div>All second-year medical students at Nîmes University Hospital (Nîmes, France) were invited to participate in a training session in the radiology unit. Volunteers were divided into hybrid lecture-based and full active learning groups. The hybrid lecture-based group received a lecture-based session followed by a unit visit, while the full active learning group utilized a structured form with progressive objectives during the visit. Pretests, immediate post-tests, and two-week follow-up tests were conducted. Short-term progression was the primary outcome, with secondary objectives including mid-term acquisition and associated factors.</div></div><div><h3>Results</h3><div>51 students participated, with 20 in the hybrid lecture-based group and 31 in the full active learning group. Both groups exhibited significant progression between the first and second tests (+8.48 and +2.52 respectively, <em>p</em> < 0.01). The hybrid lecture-based group showed significantly greater mean progression (<em>p</em> < 0.01). Mid-term results indicated score decrease particularly in the hybrid lecture-based group, but it still maintained significantly superior performance (15.02/20 versus 12.33/20 for full active learning group, <em>p</em> < 0.01).</div></div><div><h3>Conclusion</h3><div>The hybrid pedagogical method yielded superior results in teaching second-year medical students the basics of radiology compared to the full active learning teaching method.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"13 ","pages":"Article 100054"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Recent literature suggests that performing systematic head computed tomography (CT) scans for mild traumatic brain injury (mTBI) in patients undergoing antithrombotic therapy offers limited benefits. This study aims to evaluate a set of criteria that could potentially eliminate the need for systematic head CT scans, performed solely because of the antithrombotic treatment status, in elderly patients (aged 75 or older) presenting with mTBI.
Materials and methods
All patients aged 75 or older who underwent a head CT scan at our academic center for mTBI while on antithrombotic therapy between January and December 2022 were retrospectively included in this study. Patients were categorized into two groups. The first group, referred to as the “At-risk group”, included patients with any of the following: GCS score < 15 or cognitive impairment; initial loss of consciousness; hemodynamic instability; signs of fractures; extensive subcutaneous hematoma; severe or treatment-resistant headache; vomiting; seizure; any neurological deficit; intoxication; amnesia; or a history of neurosurgery. The second group, referred to as the “Not-at-risk group”, comprised patients without any of these criteria.
Results
A total of 1415 patients were included. Post-traumatic intracranial hemorrhage (P < 0.001), brain herniation (P = 0.003), and fractures (P < 0.001) occurred statistically more frequently in the At-risk group. Six post-traumatic hemorrhagic brain injuries were found in the Not-at-risk group, that did not present any of the studied criteria, and all these injuries were minor (localized SAH; millimetric SDH). Furthermore, none of these required immediate or delayed surgical intervention, and no neurological deterioration or deaths occurred in these patients.
Conclusion
In conclusion, conducting systematic head CT scans based solely on antithrombotic therapy in elderly patients aged 75 or older with mTBI might be irrelevant.
{"title":"Possible limited justification for systematic head computed tomography scans based solely on antithrombotic therapy in elderly patients (aged 75 or older) with mild traumatic brain injury","authors":"Emma Jaffres , Jean-Nicolas Dacher , Mehdi Taalba , Frédéric Roca , Matthieu Garnier , Sébastien Normant , Mathieu Lozouet , Emmanuel Gérardin , Julien Burel","doi":"10.1016/j.redii.2024.100053","DOIUrl":"10.1016/j.redii.2024.100053","url":null,"abstract":"<div><h3>Rationale and objectives</h3><div>Recent literature suggests that performing systematic head computed tomography (CT) scans for mild traumatic brain injury (mTBI) in patients undergoing antithrombotic therapy offers limited benefits. This study aims to evaluate a set of criteria that could potentially eliminate the need for systematic head CT scans, performed solely because of the antithrombotic treatment status, in elderly patients (aged 75 or older) presenting with mTBI.</div></div><div><h3>Materials and methods</h3><div>All patients aged 75 or older who underwent a head CT scan at our academic center for mTBI while on antithrombotic therapy between January and December 2022 were retrospectively included in this study. Patients were categorized into two groups. The first group, referred to as the “At-risk group”, included patients with any of the following: GCS score < 15 or cognitive impairment; initial loss of consciousness; hemodynamic instability; signs of fractures; extensive subcutaneous hematoma; severe or treatment-resistant headache; vomiting; seizure; any neurological deficit; intoxication; amnesia; or a history of neurosurgery. The second group, referred to as the “Not-at-risk group”, comprised patients without any of these criteria.</div></div><div><h3>Results</h3><div>A total of 1415 patients were included. Post-traumatic intracranial hemorrhage (<em>P</em> < 0.001), brain herniation (<em>P</em> = 0.003), and fractures (<em>P</em> < 0.001) occurred statistically more frequently in the At-risk group. Six post-traumatic hemorrhagic brain injuries were found in the Not-at-risk group, that did not present any of the studied criteria, and all these injuries were minor (localized SAH; millimetric SDH). Furthermore, none of these required immediate or delayed surgical intervention, and no neurological deterioration or deaths occurred in these patients.</div></div><div><h3>Conclusion</h3><div>In conclusion, conducting systematic head CT scans based solely on antithrombotic therapy in elderly patients aged 75 or older with mTBI might be irrelevant.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"13 ","pages":"Article 100053"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786775/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143082514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-24DOI: 10.1016/j.redii.2024.100051
Mathias Illy , Axel Bartoli , Julien Mancini , Florence Duffaud , Vincent Vidal , Farouk Tradi
Objective
To test and evaluate a sofware dedicated to the follow-up of oncological CT scans for potential use in the Radiology department.
Materials and methods
In this retrospective study, 37 oncological patients with baseline and follow-up CT scans were reinterpreted using a dedicated software. Baseline CT scans were chosen from the imaging reports available in our PACS (picture archiving and communicatin systems). Follow-up interpretations were independently assessed with the software. We evaluated the target lesion sums and the tumor response based on RECIST 1.1 (Response Evaluation Criteria in Solid Tumors).
Results
There was no significant difference in the target lesion sums and the tumor response assessments between the PACS data and the imaging software. There was no over or underestimation of the disease with the software. There was a sigificant deviation (progression versus stability) in three cases. For two patients, this difference was related to the evaluation of the response of non-target lesions. The difference in the third patient was due to comparison with a previous CT scan than to the baseline exam. There was a miscalculation in 13 % of the reports and in 28 % of the cases the examination was compared to the previous CT scan. Finally, the tumor response was not detailed in 43 % of the follow-up reports.
Conclusion
The use of dedicated oncology monitoring software could help in reducing intepretation time and in limiting human errors.
{"title":"Dedicated software to harmonize the follow-up of oncological patients","authors":"Mathias Illy , Axel Bartoli , Julien Mancini , Florence Duffaud , Vincent Vidal , Farouk Tradi","doi":"10.1016/j.redii.2024.100051","DOIUrl":"10.1016/j.redii.2024.100051","url":null,"abstract":"<div><h3>Objective</h3><div>To test and evaluate a sofware dedicated to the follow-up of oncological CT scans for potential use in the Radiology department.</div></div><div><h3>Materials and methods</h3><div>In this retrospective study, 37 oncological patients with baseline and follow-up CT scans were reinterpreted using a dedicated software. Baseline CT scans were chosen from the imaging reports available in our PACS (picture archiving and communicatin systems). Follow-up interpretations were independently assessed with the software. We evaluated the target lesion sums and the tumor response based on RECIST 1.1 (Response Evaluation Criteria in Solid Tumors).</div></div><div><h3>Results</h3><div>There was no significant difference in the target lesion sums and the tumor response assessments between the PACS data and the imaging software. There was no over or underestimation of the disease with the software. There was a sigificant deviation (progression versus stability) in three cases. For two patients, this difference was related to the evaluation of the response of non-target lesions. The difference in the third patient was due to comparison with a previous CT scan than to the baseline exam. There was a miscalculation in 13 % of the reports and in 28 % of the cases the examination was compared to the previous CT scan. Finally, the tumor response was not detailed in 43 % of the follow-up reports.</div></div><div><h3>Conclusion</h3><div>The use of dedicated oncology monitoring software could help in reducing intepretation time and in limiting human errors.</div></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"12 ","pages":"Article 100051"},"PeriodicalIF":0.0,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772652524000127/pdfft?md5=959609feb9ca301b923eaa1ed37b79e9&pid=1-s2.0-S2772652524000127-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-23DOI: 10.1016/j.redii.2024.100052
Sirine Hamitouche , Fatma Boubaker , Gabriela Hossu , François Sirveaux , Romain Gillet , Alain Blum , Pedro Augusto Gondim Teixeira
Objective
Our study aims to quantitatively determine the concavity of the glenoid articular surface in patients with hypermobile shoulders compared to those without.
Method
We examined medical records of shoulder CTs from 2017 to 2022, selecting 50 patients with clinical signs of joint hypermobility for our case group and 54 for our control group. Two blinded readers independently assessed the glenoid morphology, calculating the glenoid concavity angle (GCA) and evaluating the articular surface shape as concave, flat, or convex. They also recorded the presence and severity of glenoid dysplasia. We compared these assessments between groups.
Results
The mean GCA was significantly lower in the hypermobile group (2.3 ± 3.7° and 2.3 ± 3.8°) versus controls (6.6 ± 3.3° and 5.3 ± 3.8°) (P < 0.05). Interobserver reproducibility was high (ICC=0.76). A stark difference in glenoid morphology was noted between groups (P < 0.001), with a majority of hypermobile patients having a flat or convex glenoid. GCAs decreased with increasing shoulder laxity and dysplasia. GCA showed 77–81 % sensitivity and 55–82 % specificity for detecting shoulder hyperlaxity with a 4° cutoff.
Conclusion
There is a significant association between GCA and shoulder hyperlaxity, demonstrating diagnostic efficacy and substantial interobserver agreement.
Clinical Relevance
GCA values lower than 4° warrant further clinical investigation for shoulder hyperlaxity and associated conditions, which is crucial for patient treatment planning.
{"title":"Glenoid morphology variation between patients with hypermobile shoulder joints and controls: Identification of hyperlaxity-related morphologic bone changes","authors":"Sirine Hamitouche , Fatma Boubaker , Gabriela Hossu , François Sirveaux , Romain Gillet , Alain Blum , Pedro Augusto Gondim Teixeira","doi":"10.1016/j.redii.2024.100052","DOIUrl":"10.1016/j.redii.2024.100052","url":null,"abstract":"<div><h3>Objective</h3><p>Our study aims to quantitatively determine the concavity of the glenoid articular surface in patients with hypermobile shoulders compared to those without.</p></div><div><h3>Method</h3><p>We examined medical records of shoulder CTs from 2017 to 2022, selecting 50 patients with clinical signs of joint hypermobility for our case group and 54 for our control group. Two blinded readers independently assessed the glenoid morphology, calculating the glenoid concavity angle (GCA) and evaluating the articular surface shape as concave, flat, or convex. They also recorded the presence and severity of glenoid dysplasia. We compared these assessments between groups.</p></div><div><h3>Results</h3><p>The mean GCA was significantly lower in the hypermobile group (2.3 ± 3.7° and 2.3 ± 3.8°) versus controls (6.6 ± 3.3° and 5.3 ± 3.8°) (<em>P</em> < 0.05). Interobserver reproducibility was high (ICC=0.76). A stark difference in glenoid morphology was noted between groups (<em>P</em> < 0.001), with a majority of hypermobile patients having a flat or convex glenoid. GCAs decreased with increasing shoulder laxity and dysplasia. GCA showed 77–81 % sensitivity and 55–82 % specificity for detecting shoulder hyperlaxity with a 4° cutoff.</p></div><div><h3>Conclusion</h3><p>There is a significant association between GCA and shoulder hyperlaxity, demonstrating diagnostic efficacy and substantial interobserver agreement.</p></div><div><h3>Clinical Relevance</h3><p>GCA values lower than 4° warrant further clinical investigation for shoulder hyperlaxity and associated conditions, which is crucial for patient treatment planning.</p></div>","PeriodicalId":74676,"journal":{"name":"Research in diagnostic and interventional imaging","volume":"11 ","pages":"Article 100052"},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772652524000139/pdfft?md5=c3bfd72b86aa1ece4b9aab19ebbbae67&pid=1-s2.0-S2772652524000139-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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