Acta radiologica open最新文献

{"title":"Body mass index, breast density, and the risk of breast cancer development in relation to the menopausal status; results from a population-based screening program in a native African-Arab country.","authors":"Rasha M Kamal,&nbsp;Salma Mostafa,&nbsp;Dorria Salem,&nbsp;Ahmed M ElHatw,&nbsp;Sherif M Mokhtar,&nbsp;Rasha Wessam,&nbsp;Sherihan Fakhry","doi":"10.1177/20584601221111704","DOIUrl":"https://doi.org/10.1177/20584601221111704","url":null,"abstract":"<p><strong>Background: </strong>Risk factors are traits or behaviors that have an influence on the development of breast cancer (BC). Awareness of the prevalent risk factors can guide in developing prevention interventions.</p><p><strong>Purpose: </strong>To evaluate the correlation between the breast density, body mass index, and the risk of breast cancer development in relation to the menopausal status in a native African-Arab population.</p><p><strong>Material and methods: </strong>The study included 30,443 screened females who were classified into cancer and non-cancer groups and each group was further sub-classified into pre- and postmenopausal groups. The breast density (BD) was reported and subjectively classified according to the 2013 ACR BI-RADS breast density classification. The weight and height were measured, and the body mass index (BMI) was calculated and classified according to the WHO BMI classification.</p><p><strong>Results: </strong>A statistically significant difference was calculated between the mean BMI in the cancer and non-cancer groups (<i>p</i>: .027) as well as between the pre- and postmenopausal groups (<i>p</i> < .001). A positive statistically insignificant correlation was calculated between the breast density and the risk of breast cancer in the premenopausal group (OR: 1.062, <i>p</i>: .919) and a negative highly significant correlation was calculated in the postmenopausal group (OR: 0.234, <i>p</i> < .001).</p><p><strong>Conclusion: </strong>BMI and BD are inversely associated with each other. The current studied population presented unique ethnic characteristics, where a decreased BD and an increased BMI were found to be independent risk factors for developing breast cancer.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fc/6f/10.1177_20584601221111704.PMC9252007.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40477081","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":"Systemic air embolism following computed-tomography-guided transthoracic needle biopsy of lung lesion - a systematic search of case reports and case series.","authors":"Pia I Pietersen,&nbsp;Björg Kristjansdottir,&nbsp;Christian Laursen,&nbsp;Gitte M Jørgensen,&nbsp;Ole Graumann","doi":"10.1177/20584601221096680","DOIUrl":"https://doi.org/10.1177/20584601221096680","url":null,"abstract":"<p><strong>Background: </strong>Systemic air embolism is a rare, however potentially fatal, low incidence, complication to CT-guided transthoracic needle biopsy of lung lesions.</p><p><strong>Purpose: </strong>The purpose of this review of case reports and series was to pool data about this rare complication and glance for a pattern or similarities in the patients' initial symptoms and course, as well as the management of the patients in relation to current guidelines.</p><p><strong>Material and methods: </strong>PubMed was searched for case reports and case series about systemic air embolisms following CT-guided transthoracic needle biopsy of lung lesions from inception to November 2021. A reviewer screened the results for eligibility and included studies which reported at least two outcomes of interest. Data was extracted by one author and a descriptive analysis was conducted.</p><p><strong>Results: </strong>Of 1,136 studies screened, 83 were eligible for inclusion involving 97 patients. The mean age was 64.8±11.7 years and ≈60% of the patients were men. In 15 cases the outcome was fatal, and most of the fatal cases (<i>n</i> = 12) had cardiac arrest as the primary initial symptom. In addition to conventional oxygen therapy, 34 patients received hyperbaric oxygen therapy, and in 30 cases the physician in charge chose to change the patient from standard supine position to - most often - Trendelenburg position.</p><p><strong>Conclusion: </strong>No similarities were found that could lead to more rapid diagnosis or more correct management. The staff should keep systemic air embolisms in mind, when more common complications are ruled out, and consider hyperbaric oxygen therapy in case of suspicion.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/35/a7/10.1177_20584601221096680.PMC9234839.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40410535","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":"Hypoglossal nerve palsy due to internal carotid artery dissection with pseudoaneurysm formation: An unusual presentation.","authors":"Tawfiq Abukeshek,&nbsp;Pihou Gbande,&nbsp;Raed Hamed","doi":"10.1177/20584601221111701","DOIUrl":"https://doi.org/10.1177/20584601221111701","url":null,"abstract":"<p><p>Internal carotid artery (ICA) dissection is a dangerous condition that results from disruption of the intimal part of the wall of the internal carotid artery. It is a rare disease that may occur spontaneously or as a result of a trauma. Spontaneous dissections of the carotid artery are rare but important causes of ischemic stroke because they usually affect young and middle-aged patients. Up to date, only a few cases were described in the literature about ICA dissection causing isolated cranial nerve palsies, with the Hypoglossal nerve being the most affected. Here, we report a case of a 56-year-old man presenting with progressive dysarthria, dysphagia to liquid diet, and difficult mastication. He was diagnosed as a case of cervical internal carotid dissection with pseudoaneurysm formation causing mass effect resulting in a compressive ipsilateral Hypoglossal nerve palsy based on magnetic resonance imaging (MRI) findings. Angiography confirmed the presence of dissecting pseudoaneurysm which was eventually managed by stenting. This case was reported to highlight and emphasize the importance of radiology, whether diagnostic or interventional, in managing rare and challenging cases such as ICA dissection.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/18/3c/10.1177_20584601221111701.PMC9247286.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40476481","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":"Whole-body magnetic resonance imaging findings and patterns of chronic nonbacterial osteomyelitis in a series of Greek pediatric patients.","authors":"Olympia Papakonstantinou,&nbsp;Spyridon Prountzos,&nbsp;Eustratios Karavasilis,&nbsp;Erato Atsali,&nbsp;Vasiliki Bizimi,&nbsp;Efthymia Alexopoulou,&nbsp;Lampros Fotis","doi":"10.1177/20584601221106701","DOIUrl":"https://doi.org/10.1177/20584601221106701","url":null,"abstract":"<p><strong>Background: </strong>Chronic nonbacterial osteomyelitis (CNO) is a pediatric autoinflammatory disorder presenting with sterile inflammatory bone lesions. Whole-body MRI (WBMRI) has most recently emerged for disease assessment, but data are limited.</p><p><strong>Purpose: </strong>The purpose is to evaluate the imaging findings and patterns of CNO on WBMRI in a series of Greek pediatric patients.</p><p><strong>Material and methods: </strong>Whole-body magnetic resonance imaging studies of all children with documented CNO, performed in a single tertiary center, were retrospectively reviewed. WBMRI included coronal T1 and short-tau inversion recovery (STIR), whole spine sagittal STIR, and ankle/foot sagittal STIR images. High signal intensity lesions on STIR images corresponding to bone marrow edema were recorded. The SPSS v.20 statistical package was used for descriptive statistics.</p><p><strong>Results: </strong>Twenty children were included (mean age: 12, range: 6-16 years) with 1-31 lesions (mean: 11.8) on WBMRI. Two children had unifocal disease localized at the clavicle, three paucifocal (1-4 lesions), and 15 multifocal bone involvement. All but two children presented with ankle pain and exhibited lesions at the bones of the ankle joint (90%) followed by the knee (50%) and pelvis (10%). The tibia was the most frequently affected bone (70%) followed by calcaneus (60%), fibula (50%), femur (45%), talus, and metatarsals (45%). No lesions in the cervical, thoracic, lumbar spine, and mandible were documented. Only small sacral lesions were seen in 25% of patients with the extensive peripheral disease. Bilateral metaphyseal and epiphyseal involvement with transphyseal extension were common, but the periosteal reaction and well-defined lesion margins were rare.</p><p><strong>Conclusion: </strong>Frequent involvement of the foot and ankle and paucity of substantial spinal involvement were seen in Greek pediatric patients with CNO.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/89/c7/10.1177_20584601221106701.PMC9228643.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40400091","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":"Iterative reconstruction with multifrequency signal recognition technology to improve low-contrast detectability: A phantom study.","authors":"Yoshinori Funama,&nbsp;Takashi Shirasaka,&nbsp;Taiga Goto,&nbsp;Yuko Aoki,&nbsp;Kana Tanaka,&nbsp;Ryo Yoshida","doi":"10.1177/20584601221109919","DOIUrl":"https://doi.org/10.1177/20584601221109919","url":null,"abstract":"<p><strong>Background: </strong>Brain CT needs more attention to improve the extremely low image contrast and image texture.</p><p><strong>Purpose: </strong>To evaluate the performance of iterative progressive reconstruction with visual modeling (IPV) for the improvement of low-contrast detectability (IPV-LCD) compared with filtered backprojection (FBP) and conventional IPV.</p><p><strong>Materials and methods: </strong>Low-contrast and water phantoms were used. Helical scans were conducted with the use of a CT scanner with 64 detectors. The tube voltage was set at 120 kVp; the tube current was adjusted from 60 to 300 mA with a slice thickness of 0.625 mm and from 20 to 150 mA with a slice thickness of 5.0 mm. Images were reconstructed with the FBP, conventional IPV, and IPV-LCD algorithms. The channelized Hotelling observer (CHO) model was applied in conjunction with the use of low-contrast modules in the low-contrast phantom. The noise power spectrum (NPS) and normalized NPS were calculated.</p><p><strong>Results: </strong>At the same standard and strong levels, the IPV-LCD method improved low-contrast detectability compared with the conventional IPV, regardless of contrast-rod diameters. The mean CHO values at a slice thickness of 0.625 mm were 1.83, 3.28, 4.40, 4.53, and 5.27 for FBP, IPV STD, IPV-LCD STD, IPV STR, and IPV-LCD STR, respectively. The normalized NPS for the IPV-LCD STD and STR images were slightly shifted to the higher frequency compared with that for the FBP image.</p><p><strong>Conclusion: </strong>IPV-LCD images further improve the low-contrast detectability compared with FBP and conventional IPV images while maintaining similar FBP image appearances.</p>","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c8/6e/10.1177_20584601221109919.PMC9209785.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40391867","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":"Improving cervical spinal cord lesion detection in multiple sclerosis using filtered fused proton density-T2 weighted images","authors":"Khalid O Alharbi, A. Abujamea, O. Alomair, Hussein M. Alsakkaf, A. Alharbi, Sami A. Alghamdi, Abdullah G Alharbi","doi":"10.1177/20584601221105228","DOIUrl":"https://doi.org/10.1177/20584601221105228","url":null,"abstract":"Background Magnetic Resonance Imaging (MRI) is considered a vital in depicting multiple sclerosis (MS) lesions. Current studies demonstrate that proton density (PD) weighted images (WI) are superior to T2 WI in detecting MS lesions (plaques) in the spinal cord. Purpose To evaluate the diagnostic value of filtered fused PD/T2 weighted images in detecting cervical spinal cord MS lesions. Material and Methods In this retrospective study, we selected a sample size of 50 MS patients. Using contrast limited adaptive histogram equalization (CLAHE), a digital image processing filter was used on the (PD/T2) fused images. The produced images were inspected and compared to the original PD images by two experienced neuroradiologists using interobserver and intraobserver. An ROI analysis was also performed on the processed and original PD images. Results The repeatability measurement of the match between the two examinations was highly consistent for both neuroradiologists. The repeatability for both neuroradiologists was 96.05%, and the error measurement was 3.95%. The reproducibility measurement of the neuroradiologist’s evaluation shows that the processed images could help to identify lesions better [excellent (84.87%)] than PD images [good (61.19%)]. ROIs analysis was performed on 113 MS lesions and normal areas in different images within the sample size. It revealed an enhanced ratio of 2.2 between MS lesions and normal spinal cord tissue in processed fused images compared to 1.34 in PD images. Conclusion The processed images of the fused images (PD/T2) have superior diagnostic sensitivity for MS lesions in the cervical spine than PD images alone.","PeriodicalId":72063,"journal":{"name":"Acta radiologica open","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48495766","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":"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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}