Pub Date : 2023-01-01DOI: 10.1177/20584601231153809
Victor Liaw, Man-Deuk Kim, Sunghoon Kim
Other than the expected abdominal pain post-embolization, only few complications occur after uterine artery embolization (UAE). Necrotic cavitation of adenomyosis is a particularly rare complication. Here, we describe a patient with adenomyosis who experienced persistent fever after UAE, which ultimately resolved with the spontaneous expulsion of adenomyosis.
{"title":"Adenomyosis with cavitation and infection after uterine artery embolization: A case report.","authors":"Victor Liaw, Man-Deuk Kim, Sunghoon Kim","doi":"10.1177/20584601231153809","DOIUrl":"https://doi.org/10.1177/20584601231153809","url":null,"abstract":"<p><p>Other than the expected abdominal pain post-embolization, only few complications occur after uterine artery embolization (UAE). Necrotic cavitation of adenomyosis is a particularly rare complication. Here, we describe a patient with adenomyosis who experienced persistent fever after UAE, which ultimately resolved with the spontaneous expulsion of adenomyosis.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/0c/3e/10.1177_20584601231153809.PMC9869196.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10623483","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 : 2023-01-01DOI: 10.1177/20584601231152640
Guoli Ren, Bo Wang, Daliang Liu
Horseshoe lung (HL) is an infrequent congenital lung anomaly. Its main feature is that the lower lungs on both sides extend behind the pericardium and fuse across the midline, usually accompanied by pulmonary dysplasia. It is reported that 80% of HL is relevant to the abnormal return of some pulmonary veins from the right lung to the inferior vena cava or right atrium (scimitar syndrome). Most patients are within 5 years old, most commonly within 1 year old, but HL may also have no apparent clinical symptoms or mild symptoms. This case is a 36-years-old adult female who developed left chest pain more than a month ago and continued to worsen for 10 days. The patient also had repeated pulmonary infection with cough and expectoration.
{"title":"Adult congenital horseshoe lung with bilateral pulmonary sequestration: A case report.","authors":"Guoli Ren, Bo Wang, Daliang Liu","doi":"10.1177/20584601231152640","DOIUrl":"https://doi.org/10.1177/20584601231152640","url":null,"abstract":"<p><p>Horseshoe lung (HL) is an infrequent congenital lung anomaly. Its main feature is that the lower lungs on both sides extend behind the pericardium and fuse across the midline, usually accompanied by pulmonary dysplasia. It is reported that 80% of HL is relevant to the abnormal return of some pulmonary veins from the right lung to the inferior vena cava or right atrium (scimitar syndrome). Most patients are within 5 years old, most commonly within 1 year old, but HL may also have no apparent clinical symptoms or mild symptoms. This case is a 36-years-old adult female who developed left chest pain more than a month ago and continued to worsen for 10 days. The patient also had repeated pulmonary infection with cough and expectoration.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/95/58/10.1177_20584601231152640.PMC9869191.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10623484","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 : 2022-12-01DOI: 10.1177/20584601221143499
Andrea Sibilio, Elisa Bucchi, Clarissa Alfieri, Francesco Marongiu, Annalisa Curcio
Stereotactic vacuum-assisted breast biopsy (VABB) system is generally used to perform breast biopsies after identifying suspicious lesions that are occult on ultrasound. In this case, we used an 8-Gauge VABB to retrieve a needle point retained in the outer-lower quadrant of the right breast of a patient previously treated with lumpectomy. The use of stereotactic VABB system in this specific clinical setting has been never described before and resulted minimally invasive and perfectly suitable for correct localisation and retrieval of the 3-mm needle point; moreover, it may be easily reproduced elsewhere.
{"title":"Successful retrieval of a needle point from the breast through a vacuum-assisted breast biopsy system.","authors":"Andrea Sibilio, Elisa Bucchi, Clarissa Alfieri, Francesco Marongiu, Annalisa Curcio","doi":"10.1177/20584601221143499","DOIUrl":"https://doi.org/10.1177/20584601221143499","url":null,"abstract":"<p><p>Stereotactic vacuum-assisted breast biopsy (VABB) system is generally used to perform breast biopsies after identifying suspicious lesions that are occult on ultrasound. In this case, we used an 8-Gauge VABB to retrieve a needle point retained in the outer-lower quadrant of the right breast of a patient previously treated with lumpectomy. The use of stereotactic VABB system in this specific clinical setting has been never described before and resulted minimally invasive and perfectly suitable for correct localisation and retrieval of the 3-mm needle point; moreover, it may be easily reproduced elsewhere.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6b/12/10.1177_20584601221143499.PMC9732792.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10333185","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 : 2022-11-25eCollection Date: 2022-11-01DOI: 10.1177/20584601221138555
John Valtersson, Benjamin S Rasmussen, Anders Elgborn, Lars Lund, Ole Graumann
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.
{"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":"<p><strong>Background: </strong>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.</p><p><strong>Purpose: </strong>To assess the effect of a 1-h post-biopsy observation time of percutaneous image-guided renal mass biopsy.</p><p><strong>Material and methods: </strong>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.</p><p><strong>Results: </strong>A total complication rate of 4.5% (<i>n</i> = 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 (<i>p</i> = .18). A total biopsy-accuracy of 84% was observed.</p><p><strong>Conclusion: </strong>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.</p>","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}
Pub Date : 2022-11-24eCollection Date: 2022-11-01DOI: 10.1177/20584601221142256
Mauricio Canals, Andrea Canals
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.
背景:目的:在胸部 X 光和胸部计算机断层扫描(CT)放射学检查结果为阳性和/或阴性的情况下,估计患者在检测前和检测后感染 COVID-19 的概率,并与实时聚合酶链反应(RT-PCR)检测结果进行比较:方法:我们查阅了有关胸部 X 光、胸部 CT 和 RT-PCR 检测灵敏度和特异性的文献。根据这些报道的数据,估算了似然比(LR),并将阳性或阴性结果的检测前概率与检测后概率联系起来:结果:胸部 X 光检查只有在高度怀疑的情况下才具有确诊价值。胸部 CT 分析表明,在临床高度怀疑的情况下,将其作为一般检查使用几乎具有确诊价值。即使有中度或低度临床推断,CO-RADS ≥ 4 级的胸部 CT 也几乎可以确诊为 COVID-19,而 CO-RADS 5 级的胸部 CT 在任何临床推断之前几乎都是诊断性的。只有在 RT-PCR 和/或 CT 阴性的极低临床假定情况下,才能完全排除 COVID-19:结论:胸部 X 光片,尤其是 CT 是一种快速检查方法,能够报告 COVID-19 的高概率,是对 "疑似病例 "概念的真正贡献,可以及早、及时地提供支持。
{"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":"<p><strong>Background: </strong>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.</p><p><strong>Purpose: </strong>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.</p><p><strong>Methods: </strong>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.</p><p><strong>Results: </strong>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.</p><p><strong>Conclusions: </strong>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.</p>","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}
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.
{"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":"<p><p>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.</p>","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}
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.
{"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":"<p><strong>Background: </strong>A cardiac resting phase is used when performing free-breathing cardiac magnetic resonance examinations.</p><p><strong>Purpose: </strong>The purpose of this study was to test a cardiac resting phase detection system based on neural networks in clinical practice.</p><p><strong>Material and methods: </strong>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.</p><p><strong>Results: </strong>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 (<i>p</i> = .30, .90, respectively), whereas the end point was significantly different between the two groups (<i>p</i> < .05). The start point was not significantly different between the general operator and expert (<i>p</i> = .09), whereas the rest duration and end point were significantly different between the two groups (<i>p</i> < .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).</p><p><strong>Conclusions: </strong>The neural network can determine the resting phase instantly with better accuracy than the manual detection of general operators.</p>","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}
Background: Transcatheter arterial embolization (TAE) is widely accepted as a treatment for bleeding from the pancreaticodoudenal artery (PDA) in patients with celiac artery stenosis. However, the technical aspect of TAE has not received much attention.
Purpose: To report the technical details and success rate of TAE for bleeding from the PDA in patients with CA stenosis.
Material and methods: Between 2015 and 2021, nine TAE procedures were performed in eight patients (five women, three men; one woman underwent TAE twice). The cause of CA stenosis was compression by the median arcuate ligament in eight cases and CA dissection in one case. The cause of bleeding was flow-related aneurysm rupture in six cases. Pre-TAE CT showed a pseudoaneurysm in all cases. The technical details of TAE were recorded, and the success rate was evaluated.
Results: The technical and clinical success rates were 100%. In six cases, both the CA and superior mesenteric artery (SMA) were cannulated using two parent catheters: a microcatheter advancing to the pseudoaneurysm from the CA (the CA approach) to achieve embolization and another catheter for angiography advancing from the SMA to map the vascular anatomy. In five cases, the CA approach was successfully performed after failed attempts of advancing a microcatheter from the SMA.
Conclusion: TAE is an effective treatment for bleeding from the PDA in patients with CA stenosis. Using two parent catheters, one for CA cannulation and microcatheter advancement and another for SMA cannulation and vascular mapping, may be a useful technique.
{"title":"Transcatheter arterial embolization for bleeding from the pancreaticoduodenal artery in patients with celiac artery stenosis: A technical report.","authors":"Yasuyuki Onishi, Hironori Shimizu, Hiroyoshi Isoda, Ken Shinozuka, Shigeru Ohtsuru, Yuji Nakamoto","doi":"10.1177/20584601221135180","DOIUrl":"https://doi.org/10.1177/20584601221135180","url":null,"abstract":"<p><strong>Background: </strong>Transcatheter arterial embolization (TAE) is widely accepted as a treatment for bleeding from the pancreaticodoudenal artery (PDA) in patients with celiac artery stenosis. However, the technical aspect of TAE has not received much attention.</p><p><strong>Purpose: </strong>To report the technical details and success rate of TAE for bleeding from the PDA in patients with CA stenosis.</p><p><strong>Material and methods: </strong>Between 2015 and 2021, nine TAE procedures were performed in eight patients (five women, three men; one woman underwent TAE twice). The cause of CA stenosis was compression by the median arcuate ligament in eight cases and CA dissection in one case. The cause of bleeding was flow-related aneurysm rupture in six cases. Pre-TAE CT showed a pseudoaneurysm in all cases. The technical details of TAE were recorded, and the success rate was evaluated.</p><p><strong>Results: </strong>The technical and clinical success rates were 100%. In six cases, both the CA and superior mesenteric artery (SMA) were cannulated using two parent catheters: a microcatheter advancing to the pseudoaneurysm from the CA (the CA approach) to achieve embolization and another catheter for angiography advancing from the SMA to map the vascular anatomy. In five cases, the CA approach was successfully performed after failed attempts of advancing a microcatheter from the SMA.</p><p><strong>Conclusion: </strong>TAE is an effective treatment for bleeding from the PDA in patients with CA stenosis. Using two parent catheters, one for CA cannulation and microcatheter advancement and another for SMA cannulation and vascular mapping, may be a useful technique.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/74/2a/10.1177_20584601221135180.PMC9597204.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40657849","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}
Background: The increasing ratio of functional future liver remnant (functional %FLR) after modified associating liver partition and portal vein ligation/embolization for staged hepatectomy (modified-ALPPS) compared with portal vein embolization (PVE) has not been comprehensively evaluated.
Purpose: To compare the increasing ratio of functional %FLR between modified-ALPPS and PVE via technetium-99 m-galactosyl human serum albumin single-photon emission computed tomography (99mTc-GSA SPECT/CT) fusion imaging.
Material and methods: Seven and six patients underwent modified-ALPPS (modified-ALPPS group) and PVE (PVE group) from 2015 to 2019. The functional %FLR on 99 mTc-GSA SPECT/CT fusion imaging was assessed before and 1 week (modified-ALPPS group) and 3 weeks (PVE group) after each procedure. The increasing ratio of functional %FLR (functional %FLR ratio) was calculated and compared between the two groups. Moreover, the hypertrophy ratio of future liver remnant volume (FLRV ratio) and atrophy ratio of embolized liver volume (.ELV ratio) were evaluated.
Results: The mean functional %FLR ratios of the modified-ALPPS group (1.47 ± 0.15) and the PVE group (1.49 ± 0.20) were comparable (p > .05). The median FLRV ratio of modified-ALPPS group (1.48) was higher than that of the PVE group (1.16), the median ELV ratio of the PVE group (0.81) was lower than that of the modified-ALPPS group (0.94), and the results significantly differed between the two groups (p < .05).
Conclusion: The increasing ratio of functional %FLR was comparable between modified-ALPPS and PVE. Compared with PVE, ALPPS was associated with a higher hypertrophy rate of the remnant liver but a lower atrophy rate of the embolized liver.
{"title":"Increased future liver function after modified associating liver partition and portal vein ligation/embolization for staged hepatectomy.","authors":"Mitsunari Maruyama, Takeshi Yoshizako, Rika Yoshida, Megumi Nakamura, Yoshitsugu Tajima, Hajime Kitagaki","doi":"10.1177/20584601221134951","DOIUrl":"https://doi.org/10.1177/20584601221134951","url":null,"abstract":"<p><strong>Background: </strong>The increasing ratio of functional future liver remnant (functional %FLR) after modified associating liver partition and portal vein ligation/embolization for staged hepatectomy (modified-ALPPS) compared with portal vein embolization (PVE) has not been comprehensively evaluated.</p><p><strong>Purpose: </strong>To compare the increasing ratio of functional %FLR between modified-ALPPS and PVE via technetium-99 m-galactosyl human serum albumin single-photon emission computed tomography (<sup>99m</sup>Tc-GSA SPECT/CT) fusion imaging.</p><p><strong>Material and methods: </strong>Seven and six patients underwent modified-ALPPS (modified-ALPPS group) and PVE (PVE group) from 2015 to 2019. The functional %FLR on 99 mTc-GSA SPECT/CT fusion imaging was assessed before and 1 week (modified-ALPPS group) and 3 weeks (PVE group) after each procedure. The increasing ratio of functional %FLR (functional %FLR ratio) was calculated and compared between the two groups. Moreover, the hypertrophy ratio of future liver remnant volume (FLRV ratio) and atrophy ratio of embolized liver volume (.ELV ratio) were evaluated.</p><p><strong>Results: </strong>The mean functional %FLR ratios of the modified-ALPPS group (1.47 ± 0.15) and the PVE group (1.49 ± 0.20) were comparable (<i>p</i> > .05). The median FLRV ratio of modified-ALPPS group (1.48) was higher than that of the PVE group (1.16), the median ELV ratio of the PVE group (0.81) was lower than that of the modified-ALPPS group (0.94), and the results significantly differed between the two groups (<i>p</i> < .05).</p><p><strong>Conclusion: </strong>The increasing ratio of functional %FLR was comparable between modified-ALPPS and PVE. Compared with PVE, ALPPS was associated with a higher hypertrophy rate of the remnant liver but a lower atrophy rate of the embolized liver.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/8a/03/10.1177_20584601221134951.PMC9583209.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40567333","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}
Acute pulmonary thromboembolism occurring during cancer treatment has been increasing with the number of cancer patients and chemotherapy cases. Computed tomographic pulmonary angiography (CTPA) for evaluating the pulmonary artery is generally performed using rapid injection of contrast medium. However, intravenous catheters for contrast medium injection might cause extravasation due to rapid injection. This case series describes three patients who underwent contrast-enhanced computed tomography combined with low-tube-voltage imaging and slow injection. Low-tube-voltage slow-injection CTPA can be an effective technique for obtaining high contrast enhancement while accommodating fragile veins and low injection rates.
{"title":"Computed tomographic pulmonary angiography: Three cases of low-tube-voltage acquisition with a slow injection of contrast medium.","authors":"Atsushi Urikura, Tsukasa Yoshida, Masahiro Endo, Koiku Asakura, Rui Sato, Atsushi Saiga, Michihisa Moriguchi, Kazuaki Nakashima, Takeshi Aramaki","doi":"10.1177/20584601221131476","DOIUrl":"https://doi.org/10.1177/20584601221131476","url":null,"abstract":"<p><p>Acute pulmonary thromboembolism occurring during cancer treatment has been increasing with the number of cancer patients and chemotherapy cases. Computed tomographic pulmonary angiography (CTPA) for evaluating the pulmonary artery is generally performed using rapid injection of contrast medium. However, intravenous catheters for contrast medium injection might cause extravasation due to rapid injection. This case series describes three patients who underwent contrast-enhanced computed tomography combined with low-tube-voltage imaging and slow injection. Low-tube-voltage slow-injection CTPA can be an effective technique for obtaining high contrast enhancement while accommodating fragile veins and low injection rates.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/43/a7/10.1177_20584601221131476.PMC9575461.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40559230","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}