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Impact of body fat composition on liver iron overload severity in hemochromatosis: a retrospective MRI analysis. 体脂构成对血色病肝脏铁超负荷严重程度的影响:一项回顾性核磁共振成像分析。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-22 DOI: 10.1007/s11547-024-01930-8
Marijan Pušeljić, Vanessa Stadlbauer, Nigar Ahmadova, Maximilian Pohl, Michaela Kopetzky, Ann-Katrin Kaufmann-Bühler, Nikolaus Watzinger, Jasminka Igrec, Michael Fuchsjäger, Emina Talakić

Purpose: To evaluate the correlation between ectopic adipose tissue and iron overload severity in patients with hemochromatosis.

Material and methods: A retrospective cohort of 52 patients who underwent liver iron concentration quantification from January 2015 to October 2023 using a 3.0T MRI scanner. R2* relaxation times and proton density fat fraction (PDFF) were assessed for the entire liver volume and a specific region of interest (ROI) placed in the right lobe. Total body fat (TF), subcutaneous fat (SCF), intermuscular fat (IMF), and visceral fat (VSF) percentages were calculated from a single axial slice at the level of the third lumbar vertebra. Additionally, ratios of IMF-to-VSF, IMF-to-SCF, and SCF-to-VSF were calculated. Standard iron laboratory parameters were collected at least one month prior to MRI. Pearson correlation coefficient was used for correlation analysis.

Results: The mean age of participants was 53.9 ± 19.6 years. IMF positively correlated with R2* values in the ROI (p = 0.005, rs = 0.382) and entire liver (p = 0.016, rs = 0.332). Conversely, VSF negatively correlated with R2* values from the ROI (p = < 0.001, rs = - 0.488) and entire liver (p = < 0.001, rs = - 0.459). Positive correlations were also found between IMF-to-VSF and R2* of the ROI (p = 0.003, rs = 0.400) and whole liver (p = 0.008, rs = 0.364). Ferritin levels positively correlated with R2* values calculated from ROI (p = 0.002, rs = 0.417) and whole liver volume (p = 0.004, rs = 0.397). A positive correlation was noted between PDFF of the entire liver and TF (p = 0.024, rs = 0.313).

Conclusion: The percentage of Intermuscular and visceral adipose tissues correlates with the severity of liver iron overload in hemochromatosis patients.

目的:评估异位脂肪组织与血色沉着病患者铁超载严重程度之间的相关性:使用 3.0T 磁共振成像扫描仪对 2015 年 1 月至 2023 年 10 月期间接受肝脏铁浓度定量的 52 例患者进行回顾性队列研究。评估了整个肝脏体积和右叶特定感兴趣区(ROI)的R2*弛豫时间和质子密度脂肪分数(PDFF)。总脂肪(TF)、皮下脂肪(SCF)、肌间脂肪(IMF)和内脏脂肪(VSF)的百分比是通过第三腰椎水平的单个轴切片计算得出的。此外,还计算了 IMF 与 VSF、IMF 与 SCF 以及 SCF 与 VSF 的比率。标准铁实验室参数至少在核磁共振成像前一个月采集。相关分析采用皮尔逊相关系数:结果:参与者的平均年龄为 53.9 ± 19.6 岁。IMF与ROI(p = 0.005,rs = 0.382)和整个肝脏(p = 0.016,rs = 0.332)的R2*值呈正相关。相反,VSF 与 ROI 的 R2* 值(p = s = - 0.488)和整个肝脏的 R2* 值(p = s = - 0.459)呈负相关。IMF-to-VSF 与 ROI 的 R2* 值(p = 0.003,rs = 0.400)和整个肝脏的 R2* 值(p = 0.008,rs = 0.364)也呈正相关。铁蛋白水平与 ROI(p = 0.002,rs = 0.417)和全肝体积(p = 0.004,rs = 0.397)计算的 R2* 值呈正相关。整个肝脏的 PDFF 与 TF 之间呈正相关(p = 0.024,rs = 0.313):结论:肌间脂肪组织和内脏脂肪组织的比例与血色沉着病患者肝脏铁超载的严重程度相关。
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引用次数: 0
Radiomics based on brain-to-tumor interface enables prediction of metastatic tumor type of brain metastasis: a proof-of-concept study. 基于脑-肿瘤界面的放射组学可预测脑转移瘤的转移瘤类型:概念验证研究。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-22 DOI: 10.1007/s11547-024-01934-4
Mingchen Jiang, Yiyao Sun, Chunna Yang, Zekun Wang, Ming Xie, Yan Wang, Dan Zhao, Yuqi Ding, Yan Zhang, Jie Liu, Huanhuan Chen, Xiran Jiang

Background: Early and accurate identification of the metastatic tumor types of brain metastasis (BM) is essential for appropriate treatment and management.

Methods: A total of 450 patients were enrolled from two centers as a primary cohort who carry 764 BMs originated from non-small cell lung cancer (NSCLC, patient = 173, lesion = 187), small cell lung cancer (SCLC, patient = 84, lesion = 196), breast cancer (BC, patient = 119, lesion = 200), and gastrointestinal cancer (GIC, patient = 74, lesion = 181). A third center enrolled 28 patients who carry 67 BMs (NSCLC = 24, SCLC = 22, BC = 10, and GIC = 11) to form an external test cohort. All patients received contrast-enhanced T1-weighted (T1CE) and T2-weighted (T2W) MRI scans at 3.0 T before treatment. Radiomics features were calculated from BM and brain-to-tumor interface (BTI) region in the MRI image and screened using least absolute shrinkage and selection operator (LASSO) to construct the radiomics signature (RS). Volume of peritumor edema (VPE) was calculated and combined with RS to create a joint model. Performance of the models was assessed by receiver operating characteristic (ROC).

Results: The BTI-based RS showed better performance compared to BM-based RS. The combined models integrating BTI features and VPE can improve identification performance in AUCs in the training (LC/NLC vs. SCLC/NSCLC vs. BC/GIC, 0.803 vs. 0.949 vs. 0.918), internal validation (LC/NLC vs. SCLC/NSCLC vs. BC/GIC, 0.717 vs. 0.854 vs. 0.840), and external test (LC/NLC vs. SCLC/NSCLC vs. BC/GIC, 0.744 vs. 0.839 vs. 0.800) cohorts.

Conclusion: This study indicated that BTI-based radiomics features and VPE are associated with the metastatic tumor types of BM.

背景:早期准确识别脑转移瘤(BM)的转移瘤类型对适当的治疗至关重要:早期准确识别脑转移瘤(BM)的转移瘤类型对于适当的治疗和管理至关重要:方法:两个中心共招募了 450 名患者作为主要队列,他们携带的 764 个脑转移瘤分别来自非小细胞肺癌(NSCLC,患者 = 173,病灶 = 187)、小细胞肺癌(SCLC,患者 = 84,病灶 = 196)、乳腺癌(BC,患者 = 119,病灶 = 200)和胃肠道癌(GIC,患者 = 74,病灶 = 181)。第三个中心招募了28名携带67个BM的患者(NSCLC=24人,SCLC=22人,BC=10人,GIC=11人)组成外部测试队列。所有患者在治疗前都接受了3.0 T对比增强T1加权(T1CE)和T2加权(T2W)磁共振成像扫描。根据核磁共振成像中的BM和脑-肿瘤界面(BTI)区域计算放射组学特征,并使用最小绝对收缩和选择算子(LASSO)进行筛选,以构建放射组学特征(RS)。计算瘤周水肿体积(VPE)并将其与 RS 结合以创建联合模型。通过接收者操作特征(ROC)评估模型的性能:结果:与基于BM的RS相比,基于BTI的RS显示出更好的性能。在训练(LC/NLC vs. SCLC/NSCLC vs. BC/GIC, 0.803 vs. 0.949 vs. 0.918)、内部验证(LC/NLC vs. SCLC/NSCLC vs. BC/GIC,0.717 vs. 0.854 vs. 0.840)和外部测试(LC/NLC vs. SCLC/NSCLC vs. BC/GIC,0.744 vs. 0.839 vs. 0.800)队列的 AUC:该研究表明,基于 BTI 的放射组学特征和 VPE 与 BM 的转移性肿瘤类型相关。
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引用次数: 0
Qualitative and quantitative evaluation of the role of CBCT in rectal cancer radiotherapy. 对 CBCT 在直肠癌放射治疗中的作用进行定性和定量评估。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-21 DOI: 10.1007/s11547-024-01932-6
Geanina-Mirela Catona, Loredana G Marcu

Verifying patients' position and internal anatomical changes are important steps in the radiotherapy of rectal cancer. Cone Beam Computed Tomography (CBCT) is an advanced imaging method that allows for the quantification of these modifications, ensuring the delivery of radiation dose to the tumor volume, while protecting surrounding organs at risk. The aim of this review is to discuss and analyze the benefits offered by this method of imaging on board the linear accelerator. In view of this, a systematic search of the scientific literature in the Medline/PubMed database was performed for publications over the last decade, with 20 articles found to be relevant for this study. To highlight the benefits of this imaging technique in rectal cancer, the frequency of CBCT use, identification of tumor volume and organs at risk on CBCT images, quantification of the movement of these organs and tumor volume, analysis of positioning errors as well as evaluation of dosimetric parameters were analyzed.

核实患者的体位和内部解剖变化是直肠癌放射治疗的重要步骤。锥形束计算机断层扫描(CBCT)是一种先进的成像方法,可对这些变化进行量化,确保将放射剂量投射到肿瘤部位,同时保护周围的危险器官。本综述旨在讨论和分析直线加速器上的这种成像方法所带来的好处。有鉴于此,我们在 Medline/PubMed 数据库中对过去十年的科学文献进行了系统搜索,发现有 20 篇文章与本研究相关。为了突出该成像技术在直肠癌中的优势,研究人员分析了 CBCT 的使用频率、CBCT 图像上肿瘤体积和危险器官的识别、这些器官和肿瘤体积移动的量化、定位误差分析以及剂量学参数评估。
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引用次数: 0
Advancing precision in CT-guided bone biopsies: exploring the potential of dual-energy CT imaging. 提高 CT 引导下骨活检的精确度:探索双能 CT 成像的潜力。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-21 DOI: 10.1007/s11547-024-01935-3
Enrico Boninsegna, Enrico Piovan, Carlo Sozzi, Emilio Simonini, Giacomo Aringhieri, Dania Cioni, Emanuele Neri

Objective: This study aimed to investigate the integration of dual-energy CT (DECT) into CT-guided bone biopsy procedures, comparing it with conventional CT techniques. The focus was on technical aspects, accuracy and radiation dose exposure.

Materials and methods: A total of 51 bone biopsies were conducted, with 36 using conventional CT and 15 utilizing DECT. Patient data, lesion characteristics and biopsy techniques were analyzed. Statistical analyses, including Fisher's exact test and independent samples t-test, were performed to compare accuracy and radiation doses between the two methods.

Results: DECT-guided biopsies demonstrated a significantly higher accuracy (93.33%) compared to conventional CT biopsies (86.11%). The radiation dose exposure for DECT was comparable to conventional CT. DECT's ability to differentiate tissues, especially in bone marrow edema detection, led to higher precision.

Conclusion: Integrating DECT into CT-guided bone biopsies enhances tissue differentiation and accuracy without significantly increasing radiation exposure. This advancement holds promise for improving musculoskeletal interventional radiology, leading to more precise diagnoses, informed treatment decisions and improved patient outcomes.

研究目的本研究旨在探讨将双能 CT(DECT)整合到 CT 引导的骨活检手术中,并将其与传统 CT 技术进行比较。重点是技术方面、准确性和辐射剂量暴露:共进行了 51 例骨活检,其中 36 例使用传统 CT,15 例使用 DECT。对患者数据、病变特征和活检技术进行了分析。统计分析包括费雪精确检验和独立样本 t 检验,以比较两种方法的准确性和辐射剂量:结果:DECT引导活检的准确率(93.33%)明显高于传统CT活检的准确率(86.11%)。DECT的辐射剂量与传统CT相当。DECT 对组织的分辨能力,尤其是在骨髓水肿检测方面,提高了精确度:结论:将 DECT 整合到 CT 引导的骨活检中可提高组织分化能力和准确性,而不会明显增加辐射剂量。这一进步有望改善肌肉骨骼介入放射学,带来更精确的诊断、更明智的治疗决策和更好的患者预后。
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引用次数: 0
A multi-center, multi-organ, multi-omic prediction model for treatment-induced severe oral mucositis in nasopharyngeal carcinoma. 鼻咽癌治疗诱发严重口腔黏膜炎的多中心、多器官、多组学预测模型。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-21 DOI: 10.1007/s11547-024-01901-z
Alexander James Nicol, Sai-Kit Lam, Jerry Chi Fung Ching, Victor Chi Wing Tam, Xinzhi Teng, Jiang Zhang, Francis Kar Ho Lee, Kenneth C W Wong, Jing Cai, Shara Wee Yee Lee

Purpose: Oral mucositis (OM) is one of the most prevalent and crippling treatment-related toxicities experienced by nasopharyngeal carcinoma (NPC) patients receiving radiotherapy (RT), posing a tremendous adverse impact on quality of life. This multi-center study aimed to develop and externally validate a multi-omic prediction model for severe OM.

Methods: Four hundred and sixty-four histologically confirmed NPC patients were retrospectively recruited from two public hospitals in Hong Kong. Model development was conducted on one institution (n = 363), and the other was reserved for external validation (n = 101). Severe OM was defined as the occurrence of CTCAE grade 3 or higher OM during RT. Two predictive models were constructed: 1) conventional clinical and DVH features and 2) a multi-omic approach including clinical, radiomic and dosiomic features.

Results: The multi-omic model, consisting of chemotherapy status and radiomic and dosiomic features, outperformed the conventional model in internal and external validation, achieving AUC scores of 0.67 [95% CI: (0.61, 0.73)] and 0.65 [95% CI: (0.53, 0.77)], respectively, compared to the conventional model with 0.63 [95% CI: (0.56, 0.69)] and 0.56 [95% CI: (0.44, 0.67)], respectively. In multivariate analysis, only the multi-omic model signature was significantly correlated with severe OM in external validation (p = 0.017), demonstrating the independent predictive value of the multi-omic approach.

Conclusion: A multi-omic model with combined clinical, radiomic and dosiomic features achieved superior pre-treatment prediction of severe OM. Further exploration is warranted to facilitate improved clinical decision-making and enable more effective and personalized care for the prevention and management of OM in NPC patients.

目的:口腔黏膜炎(OM)是鼻咽癌(NPC)患者接受放射治疗(RT)时最常见、最严重的治疗相关毒性反应之一,对患者的生活质量造成了极大的负面影响。这项多中心研究旨在开发并从外部验证严重OM的多组学预测模型:方法:从香港两家公立医院回顾性招募了464名经组织学确诊的鼻咽癌患者。其中一家医院进行了模型开发(363人),另一家医院进行了外部验证(101人)。严重OM的定义是在RT过程中出现CTCAE 3级或更高的OM。构建了两个预测模型:1)传统的临床和 DVH 特征;2)包括临床、放射学和剂量学特征的多组学方法:结果:由化疗状态、放射学和剂量学特征组成的多组学模型在内部和外部验证中的表现优于传统模型,其AUC得分分别为0.67 [95% CI: (0.61, 0.73)]和0.65 [95% CI: (0.53, 0.77)],而传统模型的AUC得分分别为0.63 [95% CI: (0.56, 0.69)]和0.56 [95% CI: (0.44, 0.67)]。在多变量分析中,只有多基因组模型特征与外部验证中的重度OM显著相关(p = 0.017),这表明多基因组方法具有独立的预测价值:结论:结合临床、放射学和剂量学特征的多组学模型在治疗前预测重度OM的效果更佳。我们需要进一步探索,以促进临床决策的改进,并为预防和管理鼻咽癌患者的OM提供更有效和个性化的治疗。
{"title":"A multi-center, multi-organ, multi-omic prediction model for treatment-induced severe oral mucositis in nasopharyngeal carcinoma.","authors":"Alexander James Nicol, Sai-Kit Lam, Jerry Chi Fung Ching, Victor Chi Wing Tam, Xinzhi Teng, Jiang Zhang, Francis Kar Ho Lee, Kenneth C W Wong, Jing Cai, Shara Wee Yee Lee","doi":"10.1007/s11547-024-01901-z","DOIUrl":"https://doi.org/10.1007/s11547-024-01901-z","url":null,"abstract":"<p><strong>Purpose: </strong>Oral mucositis (OM) is one of the most prevalent and crippling treatment-related toxicities experienced by nasopharyngeal carcinoma (NPC) patients receiving radiotherapy (RT), posing a tremendous adverse impact on quality of life. This multi-center study aimed to develop and externally validate a multi-omic prediction model for severe OM.</p><p><strong>Methods: </strong>Four hundred and sixty-four histologically confirmed NPC patients were retrospectively recruited from two public hospitals in Hong Kong. Model development was conducted on one institution (n = 363), and the other was reserved for external validation (n = 101). Severe OM was defined as the occurrence of CTCAE grade 3 or higher OM during RT. Two predictive models were constructed: 1) conventional clinical and DVH features and 2) a multi-omic approach including clinical, radiomic and dosiomic features.</p><p><strong>Results: </strong>The multi-omic model, consisting of chemotherapy status and radiomic and dosiomic features, outperformed the conventional model in internal and external validation, achieving AUC scores of 0.67 [95% CI: (0.61, 0.73)] and 0.65 [95% CI: (0.53, 0.77)], respectively, compared to the conventional model with 0.63 [95% CI: (0.56, 0.69)] and 0.56 [95% CI: (0.44, 0.67)], respectively. In multivariate analysis, only the multi-omic model signature was significantly correlated with severe OM in external validation (p = 0.017), demonstrating the independent predictive value of the multi-omic approach.</p><p><strong>Conclusion: </strong>A multi-omic model with combined clinical, radiomic and dosiomic features achieved superior pre-treatment prediction of severe OM. Further exploration is warranted to facilitate improved clinical decision-making and enable more effective and personalized care for the prevention and management of OM in NPC patients.</p>","PeriodicalId":20817,"journal":{"name":"Radiologia Medica","volume":" ","pages":""},"PeriodicalIF":9.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing detection of high-level axillary lymph node metastasis after neoadjuvant therapy in breast cancer patients with nodal involvement: a combined approach of axilla ultrasound and breast elastography. 加强对结节受累的乳腺癌患者进行新辅助治疗后高位腋窝淋巴结转移的检测:腋窝超声和乳腺弹性成像的联合方法。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-20 DOI: 10.1007/s11547-024-01936-2
Jia-Xin Huang, Feng-Tao Liu, Yu-Ting Tan, Xue-Yan Wang, Jia-Hui Huang, Shi-Yang Lin, Gui-Ling Huang, Yu-Ting Zhang, Xiao-Qing Pei

Purpose: To develop a combined approach using shear wave elastography (SWE) and conventional ultrasound (US) to determine the extent of positive axillary lymph nodes (LNs) following neoadjuvant therapy (NAT) in breast cancer patients with nodal involvement.

Methods: This prospective, multicenter study was registered on the Chinese Clinical Trial Registry (ChiCTR2400085035). From October 2018 to February 2024, a total of 303 breast cancer patients with biopsy-proven positive LN were enrolled. The conventional US features of axillary LNs and SWE characteristics of breast lesions after NAT were analyzed. The diagnostic performances of axilla US, breast SWE, and their combination in detecting residual metastasis in axillary level III after NAT were assessed.

Results: Pathologically positive LN(s) in axilla level III were detected in 13.75% of cases following NAT. The kappa value for the axilla level with positive LN confirmed by surgical pathology and detected by US is 0.39 (p < 0.001). The AUC of conventional axilla US to determine the status of axilla level III LNs after NAT was 0.67, with a sensitivity of 51.52%, a specificity of 74.36%. The breast SWE displayed moderate performance for detecting residual metastasis in axilla level III following NAT, with an AUC of 0.79, sensitivity of 84.85%, and specificity of 74.36%. Compared to axilla US and breast SWE alone, the combination of axilla US with breast SWE achieved a stronger discriminatory ability (AUC, 0.86 vs 0.67 vs 0.79, p < 0.05, Delong's test) and precise calibration (X2 = 13.90, p = 0.085, HL test), with an improved sensitivity of 93.94% and a comparable specificity of 75.64%%.

Conclusions: SWE outperformed conventional US in identifying the axilla levels with nodal metastasis following NAT in patients with initially diagnosed positive axilla. Furthermore, combining breast SWE with axilla US showed good diagnostic performance for detecting residual metastasis in axilla level III after NAT.

目的:开发一种剪切波弹性成像(SWE)和传统超声(US)相结合的方法,用于确定结节受累的乳腺癌患者接受新辅助治疗(NAT)后腋窝淋巴结(LN)阳性的范围:这项前瞻性多中心研究在中国临床试验注册中心注册(ChiCTR2400085035)。自2018年10月至2024年2月,共入组303例经活检证实LN阳性的乳腺癌患者。分析了腋窝LN的常规US特征和NAT后乳腺病变的SWE特征。评估了腋窝 US、乳腺 SWE 及其组合在检测 NAT 后腋窝 III 级残余转移方面的诊断性能:结果:13.75%的病例在 NAT 后检测到腋窝 III 层病理阳性 LN。经手术病理证实并由 US 检测出 LN 阳性的腋窝水平的 kappa 值为 0.39(P 2 = 13.90,P = 0.085,HL 检验),敏感性提高了 93.94%,特异性为 75.64%%:对于初步诊断为腋窝阳性的患者,SWE 在确定 NAT 后有结节转移的腋窝水平方面优于传统 US。此外,将乳腺SWE与腋窝X线检查相结合,在检测NAT后腋窝III度残余转移方面显示出良好的诊断性能。
{"title":"Enhancing detection of high-level axillary lymph node metastasis after neoadjuvant therapy in breast cancer patients with nodal involvement: a combined approach of axilla ultrasound and breast elastography.","authors":"Jia-Xin Huang, Feng-Tao Liu, Yu-Ting Tan, Xue-Yan Wang, Jia-Hui Huang, Shi-Yang Lin, Gui-Ling Huang, Yu-Ting Zhang, Xiao-Qing Pei","doi":"10.1007/s11547-024-01936-2","DOIUrl":"https://doi.org/10.1007/s11547-024-01936-2","url":null,"abstract":"<p><strong>Purpose: </strong>To develop a combined approach using shear wave elastography (SWE) and conventional ultrasound (US) to determine the extent of positive axillary lymph nodes (LNs) following neoadjuvant therapy (NAT) in breast cancer patients with nodal involvement.</p><p><strong>Methods: </strong>This prospective, multicenter study was registered on the Chinese Clinical Trial Registry (ChiCTR2400085035). From October 2018 to February 2024, a total of 303 breast cancer patients with biopsy-proven positive LN were enrolled. The conventional US features of axillary LNs and SWE characteristics of breast lesions after NAT were analyzed. The diagnostic performances of axilla US, breast SWE, and their combination in detecting residual metastasis in axillary level III after NAT were assessed.</p><p><strong>Results: </strong>Pathologically positive LN(s) in axilla level III were detected in 13.75% of cases following NAT. The kappa value for the axilla level with positive LN confirmed by surgical pathology and detected by US is 0.39 (p < 0.001). The AUC of conventional axilla US to determine the status of axilla level III LNs after NAT was 0.67, with a sensitivity of 51.52%, a specificity of 74.36%. The breast SWE displayed moderate performance for detecting residual metastasis in axilla level III following NAT, with an AUC of 0.79, sensitivity of 84.85%, and specificity of 74.36%. Compared to axilla US and breast SWE alone, the combination of axilla US with breast SWE achieved a stronger discriminatory ability (AUC, 0.86 vs 0.67 vs 0.79, p < 0.05, Delong's test) and precise calibration (X<sup>2</sup> = 13.90, p = 0.085, HL test), with an improved sensitivity of 93.94% and a comparable specificity of 75.64%%.</p><p><strong>Conclusions: </strong>SWE outperformed conventional US in identifying the axilla levels with nodal metastasis following NAT in patients with initially diagnosed positive axilla. Furthermore, combining breast SWE with axilla US showed good diagnostic performance for detecting residual metastasis in axilla level III after NAT.</p>","PeriodicalId":20817,"journal":{"name":"Radiologia Medica","volume":" ","pages":""},"PeriodicalIF":9.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantification of normal bone and osseous metastases in castration-resistant prostate cancer using SPECT/CT with xSPECT Quant: prospective imaging sub-study of a phase 2 clinical trial investigating the combination of pembrolizumab plus radium-223 compared to radium-223 alone. 使用xSPECT Quant的SPECT/CT对阉割耐药前列腺癌的正常骨和骨转移灶进行定量:研究pembrolizumab和镭-223联合治疗与单独使用镭-223相比的2期临床试验的前瞻性成像子研究。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-20 DOI: 10.1007/s11547-024-01931-7
Matthew S Robertson, Yating Wang, SuChun Cheng, Hyesun Park, Shahar Glomski, Lauren C Harshman, Amanda Pace, Jacqueline Kilar, Meredith Flynn, Lauren Gilbert, Atish D Choudhury, Heather Jacene

Objective: The purpose of this study is to demonstrate the consistency and reproducibility of quantitative SPECT/CT by evaluating the maximum SUV (SUVmax) in normal bone, to provide the reference value of metastatic lesions, and to evaluate the clinical implication of SUVmax changes of osseous metastasis during treatment.

Material and methods: This prospective imaging sub-study was performed as part of a phase 2 clinical trial of patients with metastatic castration-resistant prostate cancer (mCRPC) randomized to the combination of pembrolizumab plus radium-223 or to radium-223 alone (NCT03093428). The maximum standardized uptake value (SUVmax) and mean Hounsfield Unit (HUmean) of normal bone as well as metastases were measured using a 1.5 cm region of interest (ROI) on CT and xSPECT Quant reconstruction on the baseline study (S0) and restaging scans. The most tracer-avid metastatic lesion in each patient on S0 was selected as a target lesion, and changes of SUVmax and HUmean of the target lesion were compared on the first restaging scan (S1). Correlations between the percentage changes of SUVmax of the target lesion with alkaline phosphatase (ALP) and prostate-specific antigen (PSA) were assessed.

Results: Twenty-one patients were enrolled on the imaging sub-study of which 15 had paired baseline S0 and S1 data. On S0, the median SUVmax and HUmean of normal bone was 5.85 g/mL (0.42-14.98) and 133.03 (range, 28.47-461.91), respectively. The median SUVmax and HUmean of metastasis were 42.2 g/mL (range, 17.96-143.36) and 549.58 (177.87-1107.64), respectively. There was significant reduction in SUVmax (- 40.1%, range - 86.2 to + 23.5%), p < 0.001) and increase in HUmean (+ 8.3%, range - 11.3 to + 61.7%, p = 0.0479, Wilcoxon signed-rank test) of target lesions between S0 and S1. Spearman correlation between the percentage changes of SUVmax of a target lesion and both serum PSA (r = 0.33, p = 0.226) and ALP (r = 0.45, p = 0.094) were not statistically significant.

Conclusion: Quantitative SPECT/CT provides consistent and objective imaging parameters, which can help monitor tumor burden. The median SUVmax of metastasis at baseline was roughly 7.2-fold higher than normal bone. Quantitative SPECT/CT may help visualize the early osteoblastic treatment response in prostate cancer patients treated with radium-223 alone or combined with pembrolizumab.

研究目的本研究旨在通过评估正常骨的最大SUV(SUVmax)来证明定量SPECT/CT的一致性和可重复性,为转移病灶提供参考值,并评估治疗期间骨转移灶SUVmax变化的临床意义:这项前瞻性成像子研究是转移性耐阉割前列腺癌(mCRPC)患者随机接受pembrolizumab加镭-223联合治疗或单独接受镭-223治疗(NCT03093428)的2期临床试验的一部分。在基线研究(S0)和重新分期扫描的 CT 和 xSPECT 定量重建中,使用 1.5 厘米感兴趣区(ROI)测量正常骨骼和转移灶的最大标准化摄取值(SUVmax)和平均 Hounsfield 单位(HUmean)。每位患者在 S0 扫描时选择示踪剂拮抗程度最高的转移病灶作为靶病灶,在第一次重新分期扫描(S1)时比较靶病灶的 SUVmax 和 HUmean 变化。评估目标病灶的 SUVmax 百分比变化与碱性磷酸酶(ALP)和前列腺特异性抗原(PSA)之间的相关性:21名患者参加了成像子研究,其中15名患者的S0和S1基线数据成对。在 S0 阶段,正常骨骼的中位 SUVmax 和 HUmean 分别为 5.85 g/mL(0.42-14.98)和 133.03(范围为 28.47-461.91)。转移瘤的中位 SUVmax 和 HUmean 分别为 42.2 g/mL(范围为 17.96-143.36)和 549.58(177.87-1107.64)。在S0和S1之间,靶病灶的SUVmax(- 40.1%,范围- 86.2至+ 23.5%)和P平均值(+ 8.3%,范围- 11.3至+ 61.7%,P = 0.0479,Wilcoxon符号秩检验)明显下降。靶病灶 SUVmax 百分比变化与血清 PSA(r = 0.33,p = 0.226)和 ALP(r = 0.45,p = 0.094)之间的 Spearman 相关性无统计学意义:定量 SPECT/CT 可提供一致、客观的成像参数,有助于监测肿瘤负荷。基线时转移瘤的中位 SUVmax 比正常骨高约 7.2 倍。定量SPECT/CT有助于观察单独使用镭-223或联合使用彭博利珠单抗治疗的前列腺癌患者的早期成骨治疗反应。
{"title":"Quantification of normal bone and osseous metastases in castration-resistant prostate cancer using SPECT/CT with xSPECT Quant: prospective imaging sub-study of a phase 2 clinical trial investigating the combination of pembrolizumab plus radium-223 compared to radium-223 alone.","authors":"Matthew S Robertson, Yating Wang, SuChun Cheng, Hyesun Park, Shahar Glomski, Lauren C Harshman, Amanda Pace, Jacqueline Kilar, Meredith Flynn, Lauren Gilbert, Atish D Choudhury, Heather Jacene","doi":"10.1007/s11547-024-01931-7","DOIUrl":"https://doi.org/10.1007/s11547-024-01931-7","url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this study is to demonstrate the consistency and reproducibility of quantitative SPECT/CT by evaluating the maximum SUV (SUV<sub>max</sub>) in normal bone, to provide the reference value of metastatic lesions, and to evaluate the clinical implication of SUV<sub>max</sub> changes of osseous metastasis during treatment.</p><p><strong>Material and methods: </strong>This prospective imaging sub-study was performed as part of a phase 2 clinical trial of patients with metastatic castration-resistant prostate cancer (mCRPC) randomized to the combination of pembrolizumab plus radium-223 or to radium-223 alone (NCT03093428). The maximum standardized uptake value (SUV<sub>max</sub>) and mean Hounsfield Unit (HU<sub>mean</sub>) of normal bone as well as metastases were measured using a 1.5 cm region of interest (ROI) on CT and xSPECT Quant reconstruction on the baseline study (S<sub>0</sub>) and restaging scans. The most tracer-avid metastatic lesion in each patient on S<sub>0</sub> was selected as a target lesion, and changes of SUV<sub>max</sub> and HU<sub>mean</sub> of the target lesion were compared on the first restaging scan (S<sub>1</sub>). Correlations between the percentage changes of SUV<sub>max</sub> of the target lesion with alkaline phosphatase (ALP) and prostate-specific antigen (PSA) were assessed.</p><p><strong>Results: </strong>Twenty-one patients were enrolled on the imaging sub-study of which 15 had paired baseline S<sub>0</sub> and S<sub>1</sub> data. On S<sub>0</sub>, the median SUV<sub>max</sub> and HU<sub>mean</sub> of normal bone was 5.85 g/mL (0.42-14.98) and 133.03 (range, 28.47-461.91), respectively. The median SUV<sub>max</sub> and HU<sub>mean</sub> of metastasis were 42.2 g/mL (range, 17.96-143.36) and 549.58 (177.87-1107.64), respectively. There was significant reduction in SUV<sub>max</sub> (- 40.1%, range - 86.2 to + 23.5%), p < 0.001) and increase in HU<sub>mean</sub> (+ 8.3%, range - 11.3 to + 61.7%, p = 0.0479, Wilcoxon signed-rank test) of target lesions between S<sub>0</sub> and S<sub>1</sub>. Spearman correlation between the percentage changes of SUV<sub>max</sub> of a target lesion and both serum PSA (r = 0.33, p = 0.226) and ALP (r = 0.45, p = 0.094) were not statistically significant.</p><p><strong>Conclusion: </strong>Quantitative SPECT/CT provides consistent and objective imaging parameters, which can help monitor tumor burden. The median SUVmax of metastasis at baseline was roughly 7.2-fold higher than normal bone. Quantitative SPECT/CT may help visualize the early osteoblastic treatment response in prostate cancer patients treated with radium-223 alone or combined with pembrolizumab.</p>","PeriodicalId":20817,"journal":{"name":"Radiologia Medica","volume":" ","pages":""},"PeriodicalIF":9.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Long-term clinical outcomes of thermal ablation for benign thyroid nodules and unresolved issues: a comprehensive systematic review. 甲状腺良性结节热消融的长期临床疗效及未决问题:一项全面的系统综述。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-18 DOI: 10.1007/s11547-024-01924-6
So Yeong Jeong, Jung Hwan Baek

Thermal ablation is widely accepted as an effective and safe method for treating benign thyroid nodules. Many studies reporting short-term results have consistently demonstrated the efficacy and safety of thermal ablation. However, as the clinical application of thermal ablation grows and follow-up periods extend, long-term clinical outcomes of thermal ablation have revealed several issues, including regrowth and diagnosis of malignancy in ablated lesions. In this systematic review, we analyze the long-term clinical outcomes of thyroid thermal ablation, focusing on regrowth, delayed surgery, and the potential for malignancy after thermal ablation and propose solutions to address these unresolved issues and enhance the management of benign thyroid nodules through thermal ablation.

热消融被广泛认为是治疗良性甲状腺结节的一种有效而安全的方法。许多报告短期结果的研究一致证明了热消融的有效性和安全性。然而,随着热消融临床应用的增加和随访时间的延长,热消融的长期临床结果暴露出了一些问题,包括消融病灶的再生和恶性肿瘤的诊断。在这篇系统性综述中,我们分析了甲状腺热消融的长期临床结果,重点关注热消融后的再生长、手术延迟和恶性肿瘤的可能性,并提出了解决这些未决问题的方案,通过热消融加强对良性甲状腺结节的管理。
{"title":"Long-term clinical outcomes of thermal ablation for benign thyroid nodules and unresolved issues: a comprehensive systematic review.","authors":"So Yeong Jeong, Jung Hwan Baek","doi":"10.1007/s11547-024-01924-6","DOIUrl":"10.1007/s11547-024-01924-6","url":null,"abstract":"<p><p>Thermal ablation is widely accepted as an effective and safe method for treating benign thyroid nodules. Many studies reporting short-term results have consistently demonstrated the efficacy and safety of thermal ablation. However, as the clinical application of thermal ablation grows and follow-up periods extend, long-term clinical outcomes of thermal ablation have revealed several issues, including regrowth and diagnosis of malignancy in ablated lesions. In this systematic review, we analyze the long-term clinical outcomes of thyroid thermal ablation, focusing on regrowth, delayed surgery, and the potential for malignancy after thermal ablation and propose solutions to address these unresolved issues and enhance the management of benign thyroid nodules through thermal ablation.</p>","PeriodicalId":20817,"journal":{"name":"Radiologia Medica","volume":" ","pages":""},"PeriodicalIF":9.7,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Diagnostic accuracy of MRI for evaluating myometrial invasion in endometrial cancer: a comparison of MUSE-DWI, rFOV-DWI, and DCE-MRI. 更正:磁共振成像评估子宫内膜癌子宫肌层浸润的诊断准确性:MUSE-DWI、rFOV-DWI 和 DCE-MRI 的比较。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-16 DOI: 10.1007/s11547-024-01928-2
Takashi Ota, Takahiro Tsuboyama, Hiromitsu Onishi, Atsushi Nakamoto, Hideyuki Fukui, Keigo Yano, Toru Honda, Kengo Kiso, Mitsuaki Tatsumi, Noriyuki Tomiyama
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引用次数: 0
Improved prognostication of overall survival after radiotherapy in lung cancer patients by an interpretable machine learning model integrating lung and tumor radiomics and clinical parameters. 通过整合肺和肿瘤放射组学及临床参数的可解释机器学习模型,改善肺癌患者放疗后总生存期的预后。
IF 9.7 1区 医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Pub Date : 2024-11-14 DOI: 10.1007/s11547-024-01919-3
Tianchen Luo, Meng Yan, Meng Zhou, Andre Dekker, Ane L Appelt, Yongling Ji, Ji Zhu, Dirk de Ruysscher, Leonard Wee, Lujun Zhao, Zhen Zhang

Background: Accurate prognostication of overall survival (OS) for non-small cell lung cancer (NSCLC) patients receiving definitive radiotherapy (RT) is crucial for developing personalized treatment strategies. This study aims to construct an interpretable prognostic model that combines radiomic features extracted from normal lung and from primary tumor with clinical parameters. Our model aimed to clarify the complex, nonlinear interactions between these variables and enhance prognostic accuracy.

Methods: We included 661 stage III NSCLC patients from three multi-national datasets: a training set (N = 349), test-set-1 (N = 229), and test-set-2 (N = 83), all undergoing definitive RT. A total of 104 distinct radiomic features were separately extracted from the regions of interest in the lung and the tumor. We developed four predictive models using eXtreme gradient boosting and selected the top 10 features based on the Shapley additive explanations (SHAP) values. These models were the tumor radiomic model (Model-T), lung radiomic model (Model-L), a combined radiomic model (Model-LT), and an integrated model incorporating clinical parameters (Model-LTC). Model performance was evaluated through Harrell's concordance index, Kaplan-Meier survival curves, time-dependent area under the receiver operating characteristic curve (AUC), calibration curves, and decision curve analysis. Interpretability was assessed using the SHAP framework.

Results: Model-LTC exhibited superior performance, with notable predictive accuracy (C-index: training set, 0.87; test-set-2, 0.76) and time-dependent AUC above 0.75. Complex nonlinear relationships and interactions were evident among the model's variables.

Conclusion: The integration of radiomic and clinical factors within an interpretable framework significantly improved OS prediction. The SHAP analysis provided insightful interpretability, enhancing the model's clinical applicability and potential for aiding personalized treatment decisions.

背景:对接受确定性放疗(RT)的非小细胞肺癌(NSCLC)患者的总生存期(OS)进行准确的预后分析对于制定个性化治疗策略至关重要。本研究旨在构建一个可解释的预后模型,将从正常肺部和原发肿瘤中提取的放射学特征与临床参数相结合。我们的模型旨在阐明这些变量之间复杂的非线性相互作用,提高预后的准确性:我们从三个多国数据集中纳入了 661 例 III 期 NSCLC 患者:训练集(349 例)、测试集-1(229 例)和测试集-2(83 例),所有患者均接受了明确的 RT 治疗。我们从肺部和肿瘤的相关区域分别提取了 104 个不同的放射学特征。我们使用极梯度增强技术开发了四个预测模型,并根据夏普利加性解释(SHAP)值选出了前 10 个特征。这些模型分别是肿瘤放射学模型(Model-T)、肺放射学模型(Model-L)、综合放射学模型(Model-LT)和包含临床参数的综合模型(Model-LTC)。通过哈雷尔一致性指数、卡普兰-梅耶生存曲线、随时间变化的接收者工作特征曲线下面积(AUC)、校准曲线和决策曲线分析对模型性能进行评估。使用 SHAP 框架对可解释性进行了评估:结果:模型-LTC表现出卓越的性能,具有显著的预测准确性(C指数:训练集,0.87;测试集-2,0.76),随时间变化的AUC超过0.75。该模型的变量之间存在复杂的非线性关系和相互作用:结论:在一个可解释的框架内整合放射学和临床因素,可显著改善OS预测。SHAP分析提供了具有洞察力的可解释性,提高了模型的临床适用性和辅助个性化治疗决策的潜力。
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引用次数: 0
期刊
Radiologia Medica
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