Pub Date : 2022-07-15eCollection Date: 2022-01-01DOI: 10.1055/a-1832-1808
Taghreed Alshafeiy, James Patrie, Mohammad Al-Shatouri
Purpose To compare the outcomes of different mammographic lesions based on the presence of an ultrasound (US) correlate and to estimate how often targeted US can identify such lesions. Materials and Methods This retrospective study included all consecutive cases from 2010 to 2016, with Breast Imaging Reporting and Database System (BI-RADS) categories 4 & 5 who underwent US as part of their diagnostic workup. We compared the incidence of malignancy between lesions comprising a US correlate that underwent US-guided core needle biopsy (CNB) and those without a correlate that underwent stereotactic CNB. Results 833 lesions met the study criteria and included masses (64.3%), architectural distortion (19%), asymmetries (4.6%), and calcifications (12.1%). The CNB-based positive predictive value (PPV) was higher for lesions with a US correlate than for those without (40.2% [36.1, 44.4%] vs. 18.9% [14.5, 23.9%], respectively) (p<0.001). Malignancy odds for masses, asymmetries, architectural distortion, and calcifications were greater by 2.70, 4.17, 4.98, and 2.77 times, respectively, for the US-guided CNB (p<0.001, p=0.091, p<0.001, and p=0.034, respectively). Targeted US identified a correlate to 66.3% of the mammographic findings. The odds of finding a correlate were greater for masses (77.8%) than architectural distortions (53.8%) (p<0.001) or calcifications (24.8%) (p<0.001). Conclusion The success of targeted US in identifying a correlate varies significantly according to the type of mammographic lesion. The PPV of lesions with a US correlate was significantly higher than that of those with no correlate. However, the PPV of lesions with no US correlate is high enough (18.9%) to warrant a biopsy.
{"title":"Positive Predictive Value for the Malignancy of Mammographic Abnormalities Based on the Presence of an Ultrasound Correlate.","authors":"Taghreed Alshafeiy, James Patrie, Mohammad Al-Shatouri","doi":"10.1055/a-1832-1808","DOIUrl":"https://doi.org/10.1055/a-1832-1808","url":null,"abstract":"<p><p><b>Purpose</b> To compare the outcomes of different mammographic lesions based on the presence of an ultrasound (US) correlate and to estimate how often targeted US can identify such lesions. <b>Materials and Methods</b> This retrospective study included all consecutive cases from 2010 to 2016, with Breast Imaging Reporting and Database System (BI-RADS) categories 4 & 5 who underwent US as part of their diagnostic workup. We compared the incidence of malignancy between lesions comprising a US correlate that underwent US-guided core needle biopsy (CNB) and those without a correlate that underwent stereotactic CNB. <b>Results</b> 833 lesions met the study criteria and included masses (64.3%), architectural distortion (19%), asymmetries (4.6%), and calcifications (12.1%). The CNB-based positive predictive value (PPV) was higher for lesions with a US correlate than for those without (40.2% [36.1, 44.4%] vs. 18.9% [14.5, 23.9%], respectively) (p<0.001). Malignancy odds for masses, asymmetries, architectural distortion, and calcifications were greater by 2.70, 4.17, 4.98, and 2.77 times, respectively, for the US-guided CNB (p<0.001, p=0.091, p<0.001, and p=0.034, respectively). Targeted US identified a correlate to 66.3% of the mammographic findings. The odds of finding a correlate were greater for masses (77.8%) than architectural distortions (53.8%) (p<0.001) or calcifications (24.8%) (p<0.001). <b>Conclusion</b> The success of targeted US in identifying a correlate varies significantly according to the type of mammographic lesion. The PPV of lesions with a US correlate was significantly higher than that of those with no correlate. However, the PPV of lesions with no US correlate is high enough (18.9%) to warrant a biopsy.</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/68/97/10-1055-a-1832-1808.PMC9286874.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40515393","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 : 2022-07-06eCollection Date: 2022-01-01DOI: 10.1055/a-1885-5971
Oria Mahmood, Rikke Jeong Jørgensen, Kristina Rue Nielsen, Lars Konge, Lene Russell
[This corrects the article DOI: 10.1055/a-1795-5138.].
[这更正了文章DOI: 10.1055/a-1795-5138]。
{"title":"Correction: Hands-On Time in Simulation-Based Ultrasound Training - A Dose-Related Response Study.","authors":"Oria Mahmood, Rikke Jeong Jørgensen, Kristina Rue Nielsen, Lars Konge, Lene Russell","doi":"10.1055/a-1885-5971","DOIUrl":"https://doi.org/10.1055/a-1885-5971","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1055/a-1795-5138.].</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d0/9f/10-1055-a-1885-5971.PMC9259203.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40490002","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 : 2022-05-03eCollection Date: 2022-01-01DOI: 10.1055/a-1795-5138
Oria Mahmood, Rikke Jørgensen, Kristina Nielsen, Lars Konge, Lene Russell
Purpose Point of care ultrasound (POCUS) is widely used, but the sensitivity and specificity of the findings are highly user-dependent. There are many different approaches to ultrasound training. The aim of this study was to explore the effects of hands-on practice when learning POCUS. Methods Junior doctors with no or limited ultrasound experience were included in the study and divided into three groups. They all completed a Focused Assessment with Sonography for Trauma (FAST) course with different amounts of hands-on practice: 40 minutes (n=67), 60 minutes (n=12), and 90 minutes of hands-on time (n=27). By the end of the course, they all completed a previously validated test. Results More hands-on time improved the mean test scores and decreased the test time. The scores of the 40-, 60-, and 90-minute groups were 11.6 (SD 2.1), 12.8 (SD 2.5), and 13.7 (SD 2.5), respectively (p<0.001). The 90-minute group completed the test significantly faster than the other two groups (20 versus 26 minutes, p=0.003). A large inter-individual variation was seen. Conclusion The necessary amount of hands-on training is unknown. This study demonstrates that performance increases with prolonged hands-on time but the inter-individual variation among trainees is very large, thereby making it impossible to define the "optimal" time. This supports the use of the concept of mastery learning where each individual trainee can continue training until proficiency is reached.
{"title":"Hands-On Time in Simulation-Based Ultrasound Training - A Dose-Related Response Study.","authors":"Oria Mahmood, Rikke Jørgensen, Kristina Nielsen, Lars Konge, Lene Russell","doi":"10.1055/a-1795-5138","DOIUrl":"10.1055/a-1795-5138","url":null,"abstract":"<p><p><b>Purpose</b> Point of care ultrasound (POCUS) is widely used, but the sensitivity and specificity of the findings are highly user-dependent. There are many different approaches to ultrasound training. The aim of this study was to explore the effects of hands-on practice when learning POCUS. <b>Methods</b> Junior doctors with no or limited ultrasound experience were included in the study and divided into three groups. They all completed a Focused Assessment with Sonography for Trauma (FAST) course with different amounts of hands-on practice: 40 minutes (n=67), 60 minutes (n=12), and 90 minutes of hands-on time (n=27). By the end of the course, they all completed a previously validated test. <b>Results</b> More hands-on time improved the mean test scores and decreased the test time. The scores of the 40-, 60-, and 90-minute groups were 11.6 (SD 2.1), 12.8 (SD 2.5), and 13.7 (SD 2.5), respectively (p<0.001). The 90-minute group completed the test significantly faster than the other two groups (20 versus 26 minutes, p=0.003). A large inter-individual variation was seen. <b>Conclusion</b> The necessary amount of hands-on training is unknown. This study demonstrates that performance increases with prolonged hands-on time but the inter-individual variation among trainees is very large, thereby making it impossible to define the \"optimal\" time. This supports the use of the concept of mastery learning where each individual trainee can continue training until proficiency is reached.</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064453/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83769102","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}
It is my great pleasure to welcome the first issue of Ultrasound International Open in 2022 even though 2023 is approaching.
尽管2023年即将到来,但我很高兴欢迎2022年第一期《超声国际公开赛》。
{"title":"Editorial.","authors":"Caroline Ewertsen","doi":"10.1055/a-1834-2542","DOIUrl":"https://doi.org/10.1055/a-1834-2542","url":null,"abstract":"<p><p>It is my great pleasure to welcome the first issue of Ultrasound International Open in 2022 even though 2023 is approaching.</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/1c/d6/10-1055-a-1834-2542.PMC9886500.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9153701","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 : 2021-11-17eCollection Date: 2021-08-01DOI: 10.1055/a-1652-1261
Tin-Quoc Nguyen, Thor Bechsgaard, Michael Rahbek Schmidt, Klaus Juul, Ramin Moshavegh, Lars Lönn, Michael Bachmann Nielsen, Jørgen Arendt Jensen, Kristoffer Lindskov Hansen
Purpose Continuous wave Doppler ultrasound is routinely used to detect cardiac valve stenoses. Vector flow imaging (VFI) is an angle-independent real-time ultrasound method that can quantify flow complexity. We aimed to evaluate if quantification of flow complexity could reliably assess valvular stenosis in pediatric patients. Materials and Methods Nine pediatric patients with echocardiographically confirmed valvular stenosis were included in the study. VFI and Doppler measurements were compared with transvalvular peak-to-peak pressure differences derived from invasive endovascular catheterization. Results Vector concentration correlated with the catheter measurements before intervention after exclusion of one outlier (r=-0.83, p=0.01), whereas the Doppler method did not (r=0.49, p=0.22). The change in vector concentration after intervention correlated strongly with the change in the measured catheter pressure difference (r=-0.86, p=0.003), while Doppler showed a tendency for a moderate correlation (r=0.63, p=0.07). Conclusion Transthoracic flow complexity quantification calculated from VFI data is feasible and may be useful for assessing valvular stenosis severity in pediatric patients.
{"title":"Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis - A Proof of Concept Study.","authors":"Tin-Quoc Nguyen, Thor Bechsgaard, Michael Rahbek Schmidt, Klaus Juul, Ramin Moshavegh, Lars Lönn, Michael Bachmann Nielsen, Jørgen Arendt Jensen, Kristoffer Lindskov Hansen","doi":"10.1055/a-1652-1261","DOIUrl":"https://doi.org/10.1055/a-1652-1261","url":null,"abstract":"<p><p><b>Purpose</b> Continuous wave Doppler ultrasound is routinely used to detect cardiac valve stenoses. Vector flow imaging (VFI) is an angle-independent real-time ultrasound method that can quantify flow complexity. We aimed to evaluate if quantification of flow complexity could reliably assess valvular stenosis in pediatric patients. <b>Materials and Methods</b> Nine pediatric patients with echocardiographically confirmed valvular stenosis were included in the study. VFI and Doppler measurements were compared with transvalvular peak-to-peak pressure differences derived from invasive endovascular catheterization. <b>Results</b> Vector concentration correlated with the catheter measurements before intervention after exclusion of one outlier (r=-0.83, p=0.01), whereas the Doppler method did not (r=0.49, p=0.22). The change in vector concentration after intervention correlated strongly with the change in the measured catheter pressure difference (r=-0.86, p=0.003), while Doppler showed a tendency for a moderate correlation (r=0.63, p=0.07). <b>Conclusion</b> Transthoracic flow complexity quantification calculated from VFI data is feasible and may be useful for assessing valvular stenosis severity in pediatric patients.</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/94/25/10-1055-a-1652-1261.PMC8598391.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39644130","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 : 2021-11-17eCollection Date: 2021-08-01DOI: 10.1055/a-1637-9550
Prakash Shetty, Vikas Kumar Singh, Amit Choudhari, Aliasgar V Moiyadi
Purpose A semantic feature-based reporting proforma for intraoperative ultrasound findings in brain tumors was devised to standardize reporting. It was applied as a pilot study on a cohort of histologically confirmed high-grade supratentorial gliomas (Grade 3 and 4) for internal validation. Materials and Methods This intraoperative semantic ultrasound proforma was used to evaluate 3D ultrasound volumes using Radiant DICOM software by 3 surgeons. The ultrasound semantic features were correlated with histological features like tumor grade, IDH status, and MIB index. Results 68 patients were analyzed using the semantic proforma. Irregular crenated was the most common margin (63.2%) and lesions were heterogeneously hyperechoic (95.6%). Necrosis was commonly seen and noted as single (67.6%) or multiple (13.2%) in over 80% cases. A separate perilesional zone, which was predominantly hyperechoic in 41.8% and both hypo and hyperechoic in 12.7%, could be identified in 54.5% of cases. Grade 4 tumors were more likely to have an irregular crenated margin (71.2%) with a single large area of necrosis, while Grade 3 tumors were likely to have smooth (31.3%) or non-characterizable margins (31.2%) with no or multiple areas of necrosis. IDH-negative tumors were more likely to have a single large focus of necrosis. Among the GBMs (52 cases), MIB labelling index of>15% was associated with poorly delineated, uncharacterizable margins, when compared with MIB labelling index<15% (23.5 vs. 0%), (p=0.046). Conclusion A detailed semantic proforma was developed for brain tumors and was internally validated. A few ultrasound sematic features were identified correlating with histological features in high-grade gliomas. It will require further external validation for refinement and acceptability.
{"title":"Development of a Standardized Semantic Feature-Based Reporting Proforma for Intraoperative Ultrasound Findings in Brain Tumors and Application in High-Grade Gliomas - A Preliminary Study.","authors":"Prakash Shetty, Vikas Kumar Singh, Amit Choudhari, Aliasgar V Moiyadi","doi":"10.1055/a-1637-9550","DOIUrl":"https://doi.org/10.1055/a-1637-9550","url":null,"abstract":"<p><p><b>Purpose</b> A semantic feature-based reporting proforma for intraoperative ultrasound findings in brain tumors was devised to standardize reporting. It was applied as a pilot study on a cohort of histologically confirmed high-grade supratentorial gliomas (Grade 3 and 4) for internal validation. <b>Materials and Methods</b> This intraoperative semantic ultrasound proforma was used to evaluate 3D ultrasound volumes using Radiant DICOM software by 3 surgeons. The ultrasound semantic features were correlated with histological features like tumor grade, IDH status, and MIB index. <b>Results</b> 68 patients were analyzed using the semantic proforma. Irregular crenated was the most common margin (63.2%) and lesions were heterogeneously hyperechoic (95.6%). Necrosis was commonly seen and noted as single (67.6%) or multiple (13.2%) in over 80% cases. A separate perilesional zone, which was predominantly hyperechoic in 41.8% and both hypo and hyperechoic in 12.7%, could be identified in 54.5% of cases. Grade 4 tumors were more likely to have an irregular crenated margin (71.2%) with a single large area of necrosis, while Grade 3 tumors were likely to have smooth (31.3%) or non-characterizable margins (31.2%) with no or multiple areas of necrosis. IDH-negative tumors were more likely to have a single large focus of necrosis. Among the GBMs (52 cases), MIB labelling index of>15% was associated with poorly delineated, uncharacterizable margins, when compared with MIB labelling index<15% (23.5 vs. 0%), (p=0.046). <b>Conclusion</b> A detailed semantic proforma was developed for brain tumors and was internally validated. A few ultrasound sematic features were identified correlating with histological features in high-grade gliomas. It will require further external validation for refinement and acceptability.</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8598392/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39644131","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 : 2021-11-17eCollection Date: 2021-08-01DOI: 10.1055/a-1626-1678
Neslihan Özkul, Peter Herbert Kann
Purpose Pheochromocytoma (PCC) and adrenocortical carcinoma (ACC) are two rare endocrine diseases. Early diagnosis is crucial to significantly reduce morbidity and mortality. In this study, we used endoscopic ultrasound (EUS) for high-resolution imaging to investigate the endosonographic morphology pattern of PCC and ACC. Materials and Methods This retrospective cohort study included 58 PCC/ACC lesions diagnosed by EUS imaging at two tertiary care centers between 1997 and 2015. The following groups were defined by histology or by the presence of a pheochromocytoma-associated syndrome without histological proof: bPCC (benign PCC), mPCC (malignant PCC), and ACC. Results In our cohort, mPCC tended to be larger at the time of diagnosis (n=5; 39.9±41.9 mm) than bPCC (n=46; 27.3 ±20.8 mm, P=0.548). ACC lesions were significantly larger (n=7; 50.6±14.8 mm) than bPCC and mPCC (n=51; 28.5±23.3 mm, P=0.002). In EUS, bPCC and ACC lesions frequently appeared to have a round shape and nodular structure. bPCC and ACC tended to be more hyperechoic (P=0.112 and P=0.558, respectively) and heterogeneous (P=0.501 and P=0.098, respectively) than mPCC. Compared to PCC, ACC did not show high hyperperfusion (P=0.022). In contrast to adenoma, all tumor entities showed hypo-/anechoic areas within the tumor (P<0.05). Conclusion No significant differences in EUS morphology were found to reliably distinguish benign from malignant PCC and ACC lesions. However, EUS may be a reasonable alternative or complementary method to conventional imaging techniques for the early detection of these tumor entities.
目的嗜铬细胞瘤(PCC)和肾上腺皮质癌(ACC)是两种罕见的内分泌疾病。早期诊断对于显著降低发病率和死亡率至关重要。在这项研究中,我们使用超声内镜(EUS)进行高分辨率成像来研究PCC和ACC的超声形态学特征。材料和方法本回顾性队列研究纳入了1997年至2015年在两个三级保健中心通过EUS成像诊断的58例PCC/ACC病变。根据组织学或有无嗜铬细胞瘤相关综合征而无组织学证据来定义以下组:bPCC(良性PCC)、mPCC(恶性PCC)和ACC。结果在我们的队列中,mPCC在诊断时趋向于较大(n=5;39.9±41.9 mm)比bPCC (n=46;27.3±20.8 mm, P=0.548)。ACC病变明显增大(n=7;50.6±14.8 mm)高于bPCC和mPCC (n=51;28.5±23.3 mm, P=0.002)。在EUS中,bPCC和ACC病变常表现为圆形和结节状结构。与mPCC相比,bPCC和ACC更倾向于高回声(P=0.112和P=0.558)和异质性(P=0.501和P=0.098)。与PCC相比,ACC未出现高灌注(P=0.022)。与腺瘤相比,所有肿瘤实体在肿瘤内均表现为低回声/无回声区(p结论EUS形态学无显著差异,可可靠区分PCC和ACC病变的良恶性。然而,EUS可能是早期发现这些肿瘤实体的一种合理的替代或补充方法,而不是传统的成像技术。
{"title":"Pheochromocytoma and Adrenocortical Carcinoma: Morphological Characteristics in Endoscopic Ultrasound Imaging.","authors":"Neslihan Özkul, Peter Herbert Kann","doi":"10.1055/a-1626-1678","DOIUrl":"https://doi.org/10.1055/a-1626-1678","url":null,"abstract":"<p><p><b>Purpose</b> Pheochromocytoma (PCC) and adrenocortical carcinoma (ACC) are two rare endocrine diseases. Early diagnosis is crucial to significantly reduce morbidity and mortality. In this study, we used endoscopic ultrasound (EUS) for high-resolution imaging to investigate the endosonographic morphology pattern of PCC and ACC. <b>Materials and Methods</b> This retrospective cohort study included 58 PCC/ACC lesions diagnosed by EUS imaging at two tertiary care centers between 1997 and 2015. The following groups were defined by histology or by the presence of a pheochromocytoma-associated syndrome without histological proof: bPCC (benign PCC), mPCC (malignant PCC), and ACC. <b>Results</b> In our cohort, mPCC tended to be larger at the time of diagnosis (n=5; 39.9±41.9 mm) than bPCC (n=46; 27.3 ±20.8 mm, P=0.548). ACC lesions were significantly larger (n=7; 50.6±14.8 mm) than bPCC and mPCC (n=51; 28.5±23.3 mm, P=0.002). In EUS, bPCC and ACC lesions frequently appeared to have a round shape and nodular structure. bPCC and ACC tended to be more hyperechoic (P=0.112 and P=0.558, respectively) and heterogeneous (P=0.501 and P=0.098, respectively) than mPCC. Compared to PCC, ACC did not show high hyperperfusion (P=0.022). In contrast to adenoma, all tumor entities showed hypo-/anechoic areas within the tumor (P<0.05). <b>Conclusion</b> No significant differences in EUS morphology were found to reliably distinguish benign from malignant PCC and ACC lesions. However, EUS may be a reasonable alternative or complementary method to conventional imaging techniques for the early detection of these tumor entities.</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/23/49/10-1055-a-1626-1678.PMC8598390.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39644132","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 : 2021-10-28eCollection Date: 2021-04-01DOI: 10.1055/a-1485-8014
Guntram Lock
Dear Colleagues, It is a special pleasure to introduce the first issue of Ultrasound International Open in a still difficult year - a year, in which many of us had concerns and clinical tasks reaching far beyond basic or clinical science on ultrasonography (US). Thus, I am delighted to draw your attention to some interesting and important new papers teaching us on various aspects of our every day's US practice.
{"title":"Editorial.","authors":"Guntram Lock","doi":"10.1055/a-1485-8014","DOIUrl":"https://doi.org/10.1055/a-1485-8014","url":null,"abstract":"<p><p>Dear Colleagues, It is a special pleasure to introduce the first issue of Ultrasound International Open in a still difficult year - a year, in which many of us had concerns and clinical tasks reaching far beyond basic or clinical science on ultrasonography (US). Thus, I am delighted to draw your attention to some interesting and important new papers teaching us on various aspects of our every day's US practice.</p>","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2021-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/91/44/10-1055-a-1485-8014.PMC8555305.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39585096","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}
Elena Elvira Soler, Nicolás López Hernández, I. Beltrán-Blasco, B. Serrano Serrano
Duplex ultrasound is a noninvasive and rapid technique that offers information on cerebral vascular hemodynamics in real time, which is very useful in acute stroke. Specifically, the orbital study provides important information on collateralization in severe cases of cervical carotid stenosis, showing an inversion of the ophthalmic artery (OA). Less frequently evaluated, hemodynamic changes in the ophthalmic vein provide information on the presence of arteriovenous malformations or fistulas (Erickson SJ et al. Radiology 1989: 173 (2): 511–516). We report a case of ophthalmic artery and vein inversion simultaneously after mechanical thrombectomy (MT).
{"title":"Double Reverse Flow of Orbitary Vessels Following Mechanical Thrombectomy in Acute Ischemic Stroke","authors":"Elena Elvira Soler, Nicolás López Hernández, I. Beltrán-Blasco, B. Serrano Serrano","doi":"10.1055/a-1714-0492","DOIUrl":"https://doi.org/10.1055/a-1714-0492","url":null,"abstract":"Duplex ultrasound is a noninvasive and rapid technique that offers information on cerebral vascular hemodynamics in real time, which is very useful in acute stroke. Specifically, the orbital study provides important information on collateralization in severe cases of cervical carotid stenosis, showing an inversion of the ophthalmic artery (OA). Less frequently evaluated, hemodynamic changes in the ophthalmic vein provide information on the presence of arteriovenous malformations or fistulas (Erickson SJ et al. Radiology 1989: 173 (2): 511–516). We report a case of ophthalmic artery and vein inversion simultaneously after mechanical thrombectomy (MT).","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80083374","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 : 2021-08-01Epub Date: 2021-08-26DOI: 10.1055/a-1543-9673
Boris Zrnic, Slavica Kovačić, Teodora Zaninovic Jurjevic, Marin Ostric
{"title":"Quadricuspid Aortic Valve: Report of a Case Combined with Moderate Ascending Aortic Dilatation.","authors":"Boris Zrnic, Slavica Kovačić, Teodora Zaninovic Jurjevic, Marin Ostric","doi":"10.1055/a-1543-9673","DOIUrl":"https://doi.org/10.1055/a-1543-9673","url":null,"abstract":"","PeriodicalId":44852,"journal":{"name":"Ultrasound International Open","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/68/9f/10-1055-a-1543-9673.PMC8390298.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39372223","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}