Acta radiologica open最新文献_第5页

Accuracy of stress perfusion cardiac magnetic resonance imaging in a district hospital. 某地区医院心脏应力灌注磁共振成像的准确性。

Acta radiologica open Pub Date : 2023-02-01 DOI: 10.1177/20584601231157018

Jostein Gleditsch, Bjørn A Halvorsen, Konstantinos Bratis, Astrid D Alvim, Anders Jordal, Jan G Fjeld, Nezar Raouf, Sohail Aslam, Eike Nagel, Christian Hall

{"title":"Accuracy of stress perfusion cardiac magnetic resonance imaging in a district hospital.","authors":"Jostein Gleditsch, Bjørn A Halvorsen, Konstantinos Bratis, Astrid D Alvim, Anders Jordal, Jan G Fjeld, Nezar Raouf, Sohail Aslam, Eike Nagel, Christian Hall","doi":"10.1177/20584601231157018","DOIUrl":"https://doi.org/10.1177/20584601231157018","url":null,"abstract":"Background: The European Society of Cardiology has published updated guidelines regarding pathways for diagnosis and management of obstructive coronary artery disease (CAD). Non-invasive functional assessment, for example, by stress perfusion cardiac magnetic resonance (stress pCMR) is recommended in patients with intermediate pretest probability of disease. Previous pCMR studies were mainly performed in high volume university hospitals with experienced radiologists or cardiologists interpreting the images.Purpose: The aim of the present study was to evaluate the feasibility of establishing a stress pCMR imaging service in a district hospital.Material and methods: One hundred and thirteen patients with intermediate pretest probability of CAD referred for single-photon emission computed tomography (SPECT) at the regional hospital also underwent adenosine stress pCMR locally. The diagnostic analysis was compared to that of an experienced cardiac magnetic resonance (CMR) center serving as a reference.Results: Inter-rater agreement between local readers and the reference reader was substantial to perfect for late gadolinium enhancement (LGE) (weighted kappa = 0.76 and 0.82), but only fair to moderate for pCMR (k = 0.34 and 0.51). No improvement in agreement between reference reader and local reader during the study was demonstrated.Conclusion: CMR is feasible in patients with intermediate pretest probability of obstructive CAD in the setting of a district hospital. However, as opposed to infarct detection with LGE, the interpretation of stress pCMR was more challenging. To establish this method, we suggest obtaining experience in close collaboration with a reference CMR center.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9974622/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9412131","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}

引用次数: 0

Sensitivity and specificity for detecting pseudotumors in patients with hip resurfacing arthroplasty, metal-on-metal or metal-on-polyethylene total hip arthroplasty-MRI versus ultrasonography performed by an orthopedic surgery resident. 由骨科住院医师执行的髋关节表面置换、金属对金属或金属对聚乙烯全髋关节置换术- mri与超声检查对假肿瘤检测的敏感性和特异性

Acta radiologica open Pub Date : 2023-02-01 DOI: 10.1177/20584601231152396

Rasmus T Mikkelsen, Martin Schou, Trine Torfing, Ole Graumann, Søren Overgaard, Claus Varnum

{"title":"Sensitivity and specificity for detecting pseudotumors in patients with hip resurfacing arthroplasty, metal-on-metal or metal-on-polyethylene total hip arthroplasty-MRI versus ultrasonography performed by an orthopedic surgery resident.","authors":"Rasmus T Mikkelsen, Martin Schou, Trine Torfing, Ole Graumann, Søren Overgaard, Claus Varnum","doi":"10.1177/20584601231152396","DOIUrl":"https://doi.org/10.1177/20584601231152396","url":null,"abstract":"Background: Metal artifact reduction sequence magnetic resonance imaging (MRI) scan is a common method to detect adverse reaction to metal debris in total hip arthroplasty (THA). It might be quicker and cheaper if ultrasonography (US) could screen for the need for an MRI. However, both require trained personnel.Purpose: We aimed to investigate the sensitivity and specificity of US for detecting pseudotumors (PT) when performed by an orthopedic surgery resident compared to MRI. We also investigated the sensitivity and specificity of US to detect PTs in obese and non-obese patients.Material and methods: We examined 205 patients with hip resurfacing arthroplasty, metal-on-metal or metal-on-polyethylene THA with both MRI and US. US was performed by an orthopedic surgery resident who was trained according to a standardized training program in musculoskeletal US. Results from MRI were used as gold standard.Results: US had a sensitivity of 0.92 (95% CI 0.81-0.98) and specificity of 0.94 (95% CI 0.89-0.97) for detecting PT. It had a positive predictive value of 0.84 (95% CI 0.73-0.91) and a negative predictive value of 0.97 (95% CI 0.93-0.99). US performed similarly in obese and non-obese patients.Conclusions: US had a high sensitivity and specificity for detecting PT when performed by an orthopedic surgery resident. Trained orthopedic surgeons could screen for the need of an MRI scan when searching PTs.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/8e/05/10.1177_20584601231152396.PMC9909072.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10712600","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}

引用次数: 0

Ileocolic neoplastic intussusception-Imaging role and surgical management: A case report. 回肠结肿瘤性肠套叠:影像学作用及手术处理1例。

Acta radiologica open Pub Date : 2023-02-01 DOI: 10.1177/20584601231157031

George Hadjidekov, Dimitar Neykov

引用次数: 0

Adenomyosis with cavitation and infection after uterine artery embolization: A case report. 子宫动脉栓塞后子宫腺肌病并发空腔及感染1例。

Acta radiologica open Pub Date : 2023-01-01 DOI: 10.1177/20584601231153809

Victor Liaw, Man-Deuk Kim, Sunghoon Kim

引用次数: 0

Adult congenital horseshoe lung with bilateral pulmonary sequestration: A case report. 成人先天性马蹄肺合并双侧肺隔离1例。

Acta radiologica open Pub Date : 2023-01-01 DOI: 10.1177/20584601231152640

Guoli Ren, Bo Wang, Daliang Liu

引用次数: 0

Successful retrieval of a needle point from the breast through a vacuum-assisted breast biopsy system. 通过真空辅助乳腺活检系统成功地从乳房中取出一个针尖。

Acta radiologica open Pub Date : 2022-12-01 DOI: 10.1177/20584601221143499

Andrea Sibilio, Elisa Bucchi, Clarissa Alfieri, Francesco Marongiu, Annalisa Curcio

引用次数: 0

One hour observation of patients after image-guided percutaneous renal mass biopsy. 影像引导下经皮肾肿块活检后1小时观察。

Acta radiologica open Pub Date : 2022-11-25 eCollection Date: 2022-11-01 DOI: 10.1177/20584601221138555

John Valtersson, Benjamin S Rasmussen, Anders Elgborn, Lars Lund, Ole Graumann

{"title":"One hour observation of patients after image-guided percutaneous renal mass biopsy.","authors":"John Valtersson, Benjamin S Rasmussen, Anders Elgborn, Lars Lund, Ole Graumann","doi":"10.1177/20584601221138555","DOIUrl":"https://doi.org/10.1177/20584601221138555","url":null,"abstract":"Background: Imaging-guided percutaneous biopsy of renal masses is regarded as safe and is widely used for histopathology diagnosis before treatment. Recommended observation time after tumour biopsy varies in international guidelines and the literature is sparse.Purpose: To assess the effect of a 1-h post-biopsy observation time of percutaneous image-guided renal mass biopsy.Material and methods: This was a single-centre retrospective study. During January 2015 to September 2019, a total of 484 patients underwent renal mass biopsies. 4-h-observation-group: 178 patients and 1-h-observation-group 306 patients. All records were retrospectively reviewed, and data such as complications was obtained and compared between the two groups.Results: A total complication rate of 4.5% (n = 22) without any major complications (Cardiovascular and Interventional Radiological Society of Europe-grade (CIRSE) 5-6). Furthermore, a non-significant difference of 1.3% of the 1-h group and 3.4% in the 4-h group experiencing complications was found (p = .18). A total biopsy-accuracy of 84% was observed.Conclusion: This study shows that renal mass biopsy is safe with no major complications. This suggests that an outpatient approach with 1-h-observation time can be safely implemented for renal mass biopsy.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/5e/be/10.1177_20584601221138555.PMC9703508.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40713552","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}

引用次数: 0

How accurate are radiography and computed tomography in the diagnosis of COVID-19?-A Bayesian approach. 放射摄影和计算机断层扫描在诊断 COVID-19 时的准确性如何？

IF 0.9

Acta radiologica open Pub Date : 2022-11-24 eCollection Date: 2022-11-01 DOI: 10.1177/20584601221142256

Mauricio Canals, Andrea Canals

{"title":"How accurate are radiography and computed tomography in the diagnosis of COVID-19?-A Bayesian approach.","authors":"Mauricio Canals, Andrea Canals","doi":"10.1177/20584601221142256","DOIUrl":"10.1177/20584601221142256","url":null,"abstract":"Background: The role of radiology in patients with clinical suspicion of COVID-19 is evolving with scientific evidence, but there are differences in opinion on when and how the technique should be used for clinical diagnosis.Purpose: To estimate the pre-test and post-test probability that a patient has COVID-19 in the event of a positive and/or negative result from chest X-ray and chest computed tomography (CT) radiological studies, comparing with those of real time polymerase chain reaction (RT-PCR) tests.Methods: The literature on the sensitivity and specificity of the chest X-ray, chest CT, and RT-PCR was reviewed. Based on these reported data, the likelihood ratios (LR) were estimated and the pre-test probabilities were related to the post-test probabilities after positive or negative results.Results: The chest X-ray has only a confirmatory value in cases of high suspicion. Chest CT analyses showed that when it is used as a general study, it has almost confirmatory value under high clinical suspicion. A chest CT classified with CO-RADS ≥ 4 has almost a diagnostic certainty of COVID-19 even with moderate or low clinical presumptions, and the CO-RADS 5 classification is almost pathognomonic before any clinical presumption. To rule out COVID-19 completely is only possible in very low clinical assumptions with negative RT-PCR and/or CT.Conclusions: Chest X-ray and especially CT are fast studies that have the capacity to report high probability of COVID-19, being a real contribution to the concept of \"probable case\" and allowing support to be installed in an early and timely manner.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/3d/17/10.1177_20584601221142256.PMC9702930.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40723016","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}

引用次数: 0

Imaging features of β-catenin-activated hepatocellular adenoma with weak β-catenin activation: A rare case report. β-连环蛋白激活的肝细胞腺瘤伴弱β-连环蛋白激活的影像学特征:1例罕见报告。

Acta radiologica open Pub Date : 2022-11-23 eCollection Date: 2022-11-01 DOI: 10.1177/20584601221142241

Kiyoyuki Minamiguchi, Nagaaki Marugami, Tomoko Uchiyama, Hironori Kusano, Satoshi Yasuda, Masayuki Sho, Toshihiro Tanaka

{"title":"Imaging features of β-catenin-activated hepatocellular adenoma with weak β-catenin activation: A rare case report.","authors":"Kiyoyuki Minamiguchi, Nagaaki Marugami, Tomoko Uchiyama, Hironori Kusano, Satoshi Yasuda, Masayuki Sho, Toshihiro Tanaka","doi":"10.1177/20584601221142241","DOIUrl":"https://doi.org/10.1177/20584601221142241","url":null,"abstract":"We report valuable imaging findings in a case of β-catenin-activated hepatocellular adenoma (β-HCA) with weak β-catenin activation. A 40 year-old female presented with a liver tumor in S8 that was incidentally detected on ultrasonography. The tumor showed marked enhancement and early venous drainage into the middle hepatic vein in the arterial phase of contrast-enhanced computed tomography (CT). The tumor revealed slight hypointensity in the hepatobiliary phase of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (EOB-MRI). Six months after detection, the tumor had increased in size and a biopsy indicated hepatocellular carcinoma. The tumor was resected and pathologically diagnosed as β-HCA with weak β-catenin activation such as exon 3 S45 mutation and exon 7/8 mutation. Marked enhancement in the arterial phase of CT and MRI is a characteristic finding of β-HCA with weak β-catenin activation. Furthermore, the degree of β-catenin activation might determine the signal intensity of β-HCA in the hepatobiliary phase of EOB-MRI.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/89/21/10.1177_20584601221142241.PMC9693779.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40708906","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}

引用次数: 1

Neural network-based fully automated cardiac resting phase detection algorithm compared with manual detection in patients. 基于神经网络的全自动心脏静息期检测算法与人工检测的比较。

Acta radiologica open Pub Date : 2022-10-28 eCollection Date: 2022-10-01 DOI: 10.1177/20584601221137772

Ryo Ogawa, Tomoyuki Kido, Yasuhiro Shiraishi, Yuri Yagi, Seung Su Yoon, Jens Wetzl, Michaela Schmidt, Teruhito Kido

{"title":"Neural network-based fully automated cardiac resting phase detection algorithm compared with manual detection in patients.","authors":"Ryo Ogawa, Tomoyuki Kido, Yasuhiro Shiraishi, Yuri Yagi, Seung Su Yoon, Jens Wetzl, Michaela Schmidt, Teruhito Kido","doi":"10.1177/20584601221137772","DOIUrl":"https://doi.org/10.1177/20584601221137772","url":null,"abstract":"Background: A cardiac resting phase is used when performing free-breathing cardiac magnetic resonance examinations.Purpose: The purpose of this study was to test a cardiac resting phase detection system based on neural networks in clinical practice.Material and methods: Four chamber-view cine images were obtained from 32 patients and analyzed. The rest duration, start point, and end point were compared between that determined by the experts and general operators, and a similar comparison was done between that determined by the experts and neural networks: the normalized root-mean-square error (RMSE) was also calculated.Results: Unlike manual detection, the neural network was able to determine the resting phase almost simultaneously as the image was obtained. The rest duration and start point were not significantly different between the neural network and expert (p = .30, .90, respectively), whereas the end point was significantly different between the two groups (p < .05). The start point was not significantly different between the general operator and expert (p = .09), whereas the rest duration and end point were significantly different between the two groups (p < .05). The normalized RMSEs of the rest duration, start point, and end point of the neural network were 0.88, 0.64, and 0.33 ms, respectively, which were lower than those of the general operator (normalized RMSE values were 0.98, 0.68, and 0.51 ms, respectively).Conclusions: The neural network can determine the resting phase instantly with better accuracy than the manual detection of general operators.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b9/ee/10.1177_20584601221137772.PMC9619276.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40662546","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}

引用次数: 2