Acta radiologica open最新文献

{"title":"Erratum to “Iterative reconstruction improves image quality and reduces radiation dose in trauma protocols; A human cadaver study”","authors":"","doi":"10.1177/20584601221081284","DOIUrl":"https://doi.org/10.1177/20584601221081284","url":null,"abstract":"[This corrects the article DOI: 10.1177/20584601211055389.].","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48901232","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}

{"title":"Pelvic schwannoma in an adult male","authors":"My Hanh Thi Dau, M. Tran, Hoang Quan Nguyen, Kim Yen Thi Vo, Thanh Tam Thi Nguyen, T. Hoang, V. Hoang, Duc Thanh Hoang","doi":"10.1177/20584601221102822","DOIUrl":"https://doi.org/10.1177/20584601221102822","url":null,"abstract":"Schwannomas are benign nerve sheath tumors that are generally encapsulated and commonly detected in the head, neck, and mediastinal regions. Schwannomas localizing in the pelvis are extremely rare and tend to be asymptomatic initially due to slow growth rate. Schwannomas may be misdiagnosed as urologic or gynecologic tumors. Pelvic schwannomas are typically solitary, large, and well-circumscribed masses in the retroperitoneum or presacral areas. Other imaging characteristics are cystic degeneration, repeated hemorrhages, and calcifications. Calcification patterns can be punctate, speckled, curvilinear, or along the walls of the masses. We report a young man with a pelvic schwannoma with typical imaging features.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42306054","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}

{"title":"Open thrombectomy and retrograde mesenteric stenting as a treatment for acute in chronic occlusive mesenteric ischemia: A case report","authors":"P. Bruhn, Benjamin V. Sandholt, C. Clausen, D. Zetner","doi":"10.1177/20584601221094826","DOIUrl":"https://doi.org/10.1177/20584601221094826","url":null,"abstract":"In this case report, we outline a tailored approach for a complex patient with acute in chronic proximal occlusive mesenteric disease complicated with fresh thrombosis and a heavily calcified aorta, where the standard treatment proved suboptimal. We outline the surgical considerations that ultimately led to performing a hybrid procedure of open thrombectomy combined with retrograde open mesenteric stenting of the superior mesenteric artery. The patient was a 75-year-old male, with a history of severe arteriosclerosis presenting with abdominal pain over 48 h. An initial diagnostic laparoscopy was performed at a local hospital showing signs of mesenteric ischemia. The patient was transferred to a major trauma hospital, where the patient underwent an open thrombectomy combined with retrograde open mesenteric stenting. The patient’s intestines showed no signs of necrosis after surgery, and the patient was discharged nine days after surgery. The patient has experienced no complications and was alive at the 90-day follow-up. This case report outlines the clinical information available to the surgeons, leading to their decision of an infrequently used approach in emergency surgery. We believe that hybrid procedures utilizing the strengths of both open and endovascular surgery should be considered in complex patients where standard treatment options are suboptimal. European guidelines state that retrograde open mesenteric stenting should be performed when antegrade stenting fails, utilizing a through-and-through procedure. We believe that in some cases it is beneficial to the patient to use a hybrid approach including retrograde open mesenteric stenting as first line treatment.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47154821","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}

{"title":"MRI multiparametric scoring system for pial blood supply of intracranial meningiomas","authors":"Fumiyo Higaki, S. Inoue, W. Oda, E. Matsusue, T. Hiraki","doi":"10.1177/20584601221091208","DOIUrl":"https://doi.org/10.1177/20584601221091208","url":null,"abstract":"Background Meningiomas are occasionally fed by pial blood supply (PBS). It is postulated that peritumoral flow void (PTFV), peritumoral brain edema (PTBE), and absence of an arachnoid plane (AP) are useful parameters for evaluating PBS. Purpose To determine whether conventional magnetic resonance imaging (MRI) using a multiparametric scoring system (MSS) is a useful way to predict PBS. Material and Methods Forty-six patients were included and divided: PBS and non-PBS groups. Differences between the groups in six parameters of MR imaging were analyzed: tumor size, tumor location, PTBE grade, AP grade, PTFV, and MIB1 labeling index (MIB1-LI) grade. Cutoff values were determined using receiver operating characteristic (ROC) curve analysis for the differentiation of both groups based on statistically significant parameters. All cases were scored as 1 (PBS) or 0 (non-PBS) for each parameter according to set thresholds. Individual scores were totaled for each case, yielding a combined score for each case to obtain a cutoff value using ROC curve analysis for the MSS. Results Peritumoral brain edema grade, AP grade, PTFV, and MIB-LI grade were statistically associated with PBS. Receiver operating characteristic curve analyses showed that PTBE grade 3 or 4, AP grade 3 or 4, and PTFV positivity had the highest accuracy of 69%, 64%, and 68%, respectively. Regarding the MSS, a cutoff value of 2 had the highest accuracy of 71%; PBS diagnosis was indicated by at least two of the three parameters, namely, PTBE grade, AP grade, and PTFV. Conclusion The MSS is a useful way to predict PBS in intracranial meningiomas on MRI.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47946562","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}

{"title":"Early experience in avoiding biopsies for biopsy-naïve men with clinical suspicion of prostate cancer but non-suspicious biparametric magnetic resonance imaging results and prostate-specific antigen density < 0.15 ng/mL2: A 2-year follow-up study","authors":"Karen-Cecilie Kortenbach, V. Løgager, H. Thomsen, L. Boesen","doi":"10.1177/20584601221094825","DOIUrl":"https://doi.org/10.1177/20584601221094825","url":null,"abstract":"Background Only limited data have been published on the diagnostic accuracy of combining biparametric (bp) magnetic resonance imaging (MRI) and prostate-specific antigen density (PSAd) to rule out biopsies. Purpose The purpose is to assess the 2-year risk of being diagnosed with sPCa following the strategy of avoiding immediate biopsies in men with non-suspicious bp MRIs and a PSAd <0.15 ng/mL2. Material and Methods Two hundred biopsy-naïve men with clinical suspicion of PCa underwent a pre-biopsy bp MRI from March to July 2019. Of these, 109 men had a Prostate Imaging Reporting and Data System (PI-RADS) score of 1–3 including 77 men with calculated PSAd <0.15 ng/mL2. As a result, no biopsies were performed in these 77 men, who were clinically followed up for at least 2 years and re-examined in case of rising suspicion of sPCa. The remaining 32 men with a calculated PSAd ≥0.15 ng/mL2 underwent systematic biopsies and targeted biopsies of any PI-RADS 3 lesion. Results One of the 77 men (1.3%) had an sPCa diagnosed within 2 years of follow-up. All men were referred back to their general practitioner within 1 year and 9% (7/77) were re-referred to the urology department during follow-up. Among these men, 43% (3/7) continued to have PSA levels that were above their individual thresholds at confirmatory testing and underwent secondary MRI scans. Conclusions No biopsies for men with bpMRI results exhibiting maximum PI-RADS 3 and with a PSAd <0.15 ng/mL2 resulted in a 2-year risk of being diagnosed with sPCa of 1.3%.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47041085","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}

{"title":"Contrast-enhanced ultrasound of breast tumors: an initial experience","authors":"Merete Kristiansen, Marit A Martiniussen, A. Larsen","doi":"10.1177/20584601221097458","DOIUrl":"https://doi.org/10.1177/20584601221097458","url":null,"abstract":"Background The increase of neoadjuvant treatment for breast cancer creates a capacity challenge as response evaluation by magnetic resonance imaging (MRI) is a limited resource. Contrast-enhanced ultrasound (CEUS) has been proposed as an alternative imaging strategy. Purpose To get experience with examination of malignant breast tumors with CEUS and evaluate the potential for future use in response evaluation of neoadjuvant treatment. Material and methods In this pilot study, the dynamic contrast-enhancement of ultrasound and MRI examinations were analyzed in 14 women with histologically verified breast cancer. Results Analysis of the time intensity curve of CEUS demonstrated the difference between tumor and normal tissue. The peak intensity was five times higher in tumor tissue (mean increase 397%, 95% CI 250–545). The curve was steeper for tumor tissue (mean 1.76, 95% CI 1.26–2.26) than for normal tissue (mean 0.43, 95% CI 0.24–0.62). Conclusion CEUS is a feasible method of examining blood flow in malignant breast tumors.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41258964","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}

{"title":"Magnification assessment of radiographs for knee replacement (MARKeR) – A pilot study in a low-resource setting","authors":"M. Mencia, R. Goalan, Kimani White","doi":"10.1177/20584601221096297","DOIUrl":"https://doi.org/10.1177/20584601221096297","url":null,"abstract":"Background Selecting the correct size of implants to be used in total knee arthroplasty is critical for a successful outcome. Marker-less templating systems use an institutionally derived magnification factor for all radiographs. Purpose To determine the institutional magnification of knee radiographs for patients awaiting total knee arthroplasty. Material and Methods Eighty patients awaiting total knee arthroplasty underwent preoperative knee radiographs using a standardized protocol. A marker attached to the patients’ knees at the level of the knee joint was used to calculate the magnification factor on both anteroposterior (AP) and lateral (LAT) views. Two independent observers estimated the magnification to determine the intra and inter-observer reliability. Results The mean magnification of the AP (15.3%) radiograph was significantly greater than the LAT (12.1%) radiograph (p< 0.0001). Patients with absent markers on their radiographs were heavier than patients in whom the marker was visible (84.7 kgs vs. 76.6 kgs, p=0.01). No marker was visible on the radiographs in 56.3% (45/80) of patients. There was excellent inter and intra-observer reliability of both the AP and LAT measurements. Conclusion After standardizing the protocol for preoperative knee radiographs, our results show significantly greater institutional magnification of the anteroposterior compared with the lateral images. Accurate templating in knee arthroplasty requires both radiographic images. To reduce errors in implant sizing, we recommend surgeons use different institutional magnification factors for the anteroposterior and lateral radiographs.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46286478","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}

{"title":"Pseudohemothorax induced by residual contrast medium mimicking aortic dissection rupture","authors":"K. Okamura, R. Yoshida, T. Yoshizako, H. Kitagaki","doi":"10.1177/20584601221097468","DOIUrl":"https://doi.org/10.1177/20584601221097468","url":null,"abstract":"Hemothorax is an urgent condition, and its accurate diagnosis and the identification of the cause are important. Herein, we report a case of a 74-year-old man with end-stage renal disease who was presented with high-concentration pleural effusion owing to residual contrast medium. The case required differentiation from hemothorax owing to an aortic dissection and its rupture. In patients with end-stage renal disease, noncontrast-enhanced computed tomography after contrast-enhanced computed tomography may result in high-concentration pleural effusion owing to the existence of residual contrast medium. This realization is important to determine whether high-concentration pleural effusion symptoms reflect an urgent hemothorax case possibly related to an imminent rupture of an aortic aneurysm or intrathoracic penetration of aortic dissection, and whether invasive procedures, such as thoracentesis, ought to be avoided.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41657402","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}

{"title":"Bi-parametric MRI/TRUS fusion targeted repeat biopsy after systematic 10-12 core TRUS-guided biopsy reveals more significant prostate cancer especially in anteriorly located tumors.","authors":"Michael Häggman, Pär Dahlman, Mats Ahlberg, Per Liss, Rafaele Cantera Ahlman, Anca Dragomir, Sam Ladjevardi","doi":"10.1177/20584601221085520","DOIUrl":"10.1177/20584601221085520","url":null,"abstract":"<p><strong>Background: </strong>MRI and fusion guided biopsy have an increased role in the diagnosis of prostate cancer.</p><p><strong>Purpose: </strong>To demonstrate the possible advantages with Bi-parametric MRI fusion-guided repeat biopsy over systematic 10-12-core biopsy for the diagnosis of prostate cancer.</p><p><strong>Material and methods: </strong>Four hundred and twenty-three consecutive men, with previous systematic 10-12-core TRUS-guided biopsy, and with suspicion of, or diagnosis of, low-risk prostate cancer underwent fusion-guided prostate biopsy between February 2015 and February 2017. The material was retrospectively assessed. In 220 cases no previous cancer was diagnosed, and in 203 cases confirmatory fusion guided biopsy was performed prior to active monitoring. MRI was classified according to PI-RADS. Systematic biopsy was compared to fusion guided biopsy for the detection of cancer, and PI-RADS was compared to the Gleason score.</p><p><strong>Results: </strong>Fusion guided biopsy detected significantly more cancers than systematic (<i>p</i> < .001). Gleason scores were higher in the fusion biopsy group (<i>p</i> < .001). Anterior tumors were present in 54% of patients. Fusion biopsy from these lesions showed cancer in 53% with previously negative biopsy in systematic biopsies and 66% of them were upgraded from low risk to intermediate or high-risk cancers.</p><p><strong>Conclusion: </strong>These results show superior detection rate and grading of bi-parametric MRI/TRUS fusion targeted repeat biopsy over systematic 10-12 core biopsies. Fusion guided biopsy detects more significant cancers despite using fewer cores. The risk group was changed for many patients initially selected for active surveillance due to upgrading of tumors. Bi-parametric MRI shows promising results in detecting anterior tumors in patients with suspected prostate cancer.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":"11 1","pages":"20584601221085520"},"PeriodicalIF":0.9,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8980410/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46814257","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}

{"title":"Effectiveness of radiofrequency ablation versus transarterial chemoembolization for recurrent hepatocellular carcinoma: A meta-analysis","authors":"Haoxian Gou, Sheng Liu, Gang Zhu, Yisheng Peng, Xinkai Li, Xiao-li Yang, K. He","doi":"10.1177/20584601221085514","DOIUrl":"https://doi.org/10.1177/20584601221085514","url":null,"abstract":"Background Both transarterial chemoembolization (TACE) and radiofrequency ablation (RFA) are effective methods for the treatment of recurrent hepatocellular carcinoma (RHCC). Thus far, it is unclear which method is more satisfactory in short- and long-term survival benefits. Purpose To compare the overall survival (OS) and complications of TACE and RFA used for the management of RHCC. Material and Methods A literature search was carried out using PubMed, the Cochrane Library and, Embase databases, and Google Scholar, keywords including “RHCC,” “TACEC,” and “RFA” with a cutoff date of 30 April 2021. Used Review Manager software was to calculate short- and long-term OS. The clinical outcomes are major complications and complete response (CR). Results Finally, nine clinical trials met the research standard, including 1326 subjects, of which 518 received RFA and 808 received TACE. The analysis showed that patients who underwent RFA had significantly higher 1-, 3-, and 5-year OS (OR1-year = 1.92, 95% confidence interval (CI) = 1.27–2.91, p = .002; OR3-year = 1.64, 95% CI = 1.30–2.08, p <.0001; OR5-year = 3.22, 95% CI = 1.34–7.72, p=.009). Besides, the patients who chose RFA had an obvious higher rate of CR than those receiving TACE (OR = 33.75, 95% CI = 1.73–658.24, p = .002). However, the major complications were consistency between these two groups. Conclusion Our study discovered that RFA had greater CR and incidence in both the short-term and long-term OS than TACE. In addition, obvious difference was not found in major complications in these two methods.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42220934","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}