Radiographics最新文献

{"title":"Predicting Prognosis in Primary Sclerosing Cholangitis: Conventional to Functional MRI.","authors":"Cole P Thompson, Yashant Aswani, Channa R Jayasekera, Elizabeth J Carey, Aubrienne N Silva, Anshuman J Panda, Sudhakar K Venkatesh, Alvin C Silva, Kumaresan Sandrasegaran","doi":"10.1148/rg.260030","DOIUrl":"https://doi.org/10.1148/rg.260030","url":null,"abstract":"<p><p>Primary sclerosing cholangitis (PSC) is a chronic fibroinflammatory cholangiopathy characterized by multifocal biliary strictures, cholestasis, and an increased risk of hepatobiliary malignancy and liver failure. MRI and MR cholangiopancreatography (MRCP) are central to diagnosis, surveillance, and risk stratification. Recent consensus guidelines from the International PSC Study Group emphasize standardized reporting for PSC with MRI and MRCP. Beyond anatomic assessment, established and emerging quantitative and functional imaging biomarkers include liver stiffness measurements, T1 mapping, extracellular volume fraction, and relative hepatobiliary phase enhancement. Imaging-based scoring systems such as Assessment of Noncontrast MRI for Advanced Liver Imaging (ANALI) scores provide additional prognostic information and correlate with clinical outcomes and established risk models. Hepatocyte-specific contrast-enhanced MRI allows evaluation of biliary excretion and regional liver function, facilitating identification of functional strictures and parenchymal dysfunction. The authors review current MRI and MRCP reporting standards, prognostic scoring systems, and evolving functional MRI techniques, with an emphasis on practical implementation in clinical radiology practice. ^©RSNA, 2026 See the invited commentary by Ba-Ssalamah in this issue.</p>","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 11","pages":"e260030"},"PeriodicalIF":6.2,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149302256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vascular Abnormalities in the Hand and Wrist: State-of-the-Art Multimodality Imaging.","authors":"John Bretzman, Candice Bookwalter, Emily Bendel, Haraldur Bjarnason, Prabhakar Shantha Rajiah","doi":"10.1148/rg.250210","DOIUrl":"https://doi.org/10.1148/rg.250210","url":null,"abstract":"<p><p>Vascular abnormalities are less common in the hand and wrist than in the lower extremities but can result in significant morbidity if unrecognized or untreated. The unique vascular architecture of the hand and wrist, with a dense network of arterial anastomoses, confers resilience to ischemia, but the superficial location makes them vulnerable to trauma and occupational injury. The authors describe and illustrate a comprehensive multimodality imaging approach to the diagnosis and evaluation of vascular abnormalities of the hand and wrist. They begin with an overview of vascular anatomy and normal variants, including a persistent median artery. Multimodality imaging, including US, CT angiography, MR angiography, and digital subtraction angiography, is reviewed with a focus on strengths, limitations, and clinical utility. Dynamic imaging techniques and photon-counting CT are highlighted for their evolving roles. A wide spectrum of vascular diseases, including atherosclerosis, trauma, iatrogenic injury, embolism, hypothenar hammer syndrome, hand-arm vibration syndrome, vasculitis, and frostbite, as well as their imaging appearances, are discussed. Vascular anomalies, including vascular malformations and vascular neoplasms, are also reviewed. The role of imaging in hand transplantation is addressed. The authors provide a framework for recognizing vascular diseases in the hand and wrist and selecting the appropriate imaging modality. Familiarity with vascular anatomy, imaging findings, and clinical context is essential for timely diagnosis, guiding management, and preserving limb function.</p>","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 11","pages":"e250210"},"PeriodicalIF":6.2,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149302221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Invited Commentary: Beyond Morphology: Toward a Multiparametric MRI Score for Precision Risk Stratification in Primary Sclerosing Cholangitis.","authors":"Ahmed Ba-Ssalamah, Sarah Poetter-Lang, Ulrike Attenberger","doi":"10.1148/rg.260186","DOIUrl":"https://doi.org/10.1148/rg.260186","url":null,"abstract":"","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 11","pages":"e260186"},"PeriodicalIF":6.2,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149302197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preoperative Reservoir Mapping before Abdominal Surgery.","authors":"Roberta Albanese, Federica Tomaselli, Damiano Tambasco","doi":"10.1148/rg.260221","DOIUrl":"https://doi.org/10.1148/rg.260221","url":null,"abstract":"","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 11","pages":"e260221"},"PeriodicalIF":6.2,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149302261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alphabet Soup: Navigating the Grant Landscape and Why It Matters for Radiology Trainees.","authors":"Atlee A Witt, Kathleen H Miao, Shakthi Kumaran Ramasamy, Yihan Cao, Pak Lun Lam","doi":"10.1148/rg.250239","DOIUrl":"10.1148/rg.250239","url":null,"abstract":"","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 11","pages":"e250239"},"PeriodicalIF":6.2,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13735415/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149197587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imaging and Complications of Meckel Diverticulum.","authors":"Ananya Panda, Ahmad Farah, Malak Itani, Mohd Javed S Shaikh, Ranguelov Rostislav, Ayush Jain, Yashant Aswani","doi":"10.1148/rg.250185","DOIUrl":"https://doi.org/10.1148/rg.250185","url":null,"abstract":"<p><p>Meckel diverticulum is the most common congenital anomaly of the gastrointestinal tract, yet it is frequently asymptomatic. Meckel diverticulum poses unique diagnostic challenges due to its variable manifestation and infrequent visualization at imaging. The authors review the embryology and anatomy of Meckel diverticulum, its normal radiologic appearances, and its complications and their management. Complications of Meckel diverticulum occur in up to 4%-9% of patients. Symptomatic Meckel diverticulum is more common in children but can also be seen in adults. A giant Meckel diverticulum, presence of ectopic gastric or pancreatic tissue, or adjacent adhesions and bands are associated with a higher likelihood of a symptomatic manifestation. The most common complications include small-bowel obstruction, gastrointestinal bleeding, and diverticulitis. Children more commonly present with gastrointestinal bleeding, while diverticulitis is more common in adults. Small-bowel obstruction can occur at any age and can be secondary to inversion of Meckel diverticulum, intussusception, volvulus, internal or external hernias, neoplasms, enteroliths, congenital bands, or postinflammatory changes. When a patient presents with acute abdomen or gastrointestinal bleeding, the choice of imaging modalities includes CT or US, with the latter preferred in the pediatric population. Technetium 99m-pertechnetate scintigraphy (Meckel scan) can be additionally performed to evaluate rectal bleeding in younger patients. MRI is reserved as a problem-solving tool. Meckel diverticulum should be differentiated from its common imaging mimics (eg, the appendix, ileal duplication cyst, and mesenteric small-bowel diverticulum). When Meckel diverticulum is not visualized at imaging, the radiologist still plays a key role by raising suspicion for an underlying Meckel diverticulum and identifying other critical imaging findings that can inform clinical management. An understanding of the common clinical manifestations associated with Meckel diverticulum and a systematic imaging approach can improve preoperative diagnosis and patient management.</p>","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 11","pages":"e250185"},"PeriodicalIF":6.2,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149302208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developmental Dysplasia of the Hip: From Newborn Screening to Adult Presentation and Management.","authors":"Arash Azhideh, Nasim Eshraghi, Hyun Su Kim, Chankue Park, Nida A Ahmed, Tushar Kumar, Peyman Mirghaderi, Peter C Thurlow, Mahesh Thapa, Majid Chalian","doi":"10.1148/rg.260088","DOIUrl":"https://doi.org/10.1148/rg.260088","url":null,"abstract":"","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 10","pages":"e260088"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149118618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imaging-based Screening: Advances and Opportunities.","authors":"Perry J Pickhardt, Mark M Hammer, Christine Cooky Menias","doi":"10.1148/rg.269008","DOIUrl":"https://doi.org/10.1148/rg.269008","url":null,"abstract":"","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 10","pages":"e269008"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149128972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CT Colonography: Where Are We with Colorectal Cancer Screening?","authors":"Michio D Taya, Perry J Pickhardt, Matthew H Lee, David H Kim","doi":"10.1148/rg.260016","DOIUrl":"https://doi.org/10.1148/rg.260016","url":null,"abstract":"<p><p>CT colonography (CTC) is a validated screening test for detection and prevention of colorectal cancer (CRC). In the United States, screening CTC has been covered for Medicare beneficiaries since 2025, elevating it to equal status with other reimbursed CRC screening tests and ending a 15-year policy stalemate. Screening CTC is a highly accurate examination with an immaculate safety record and equivalent sensitivity to colonoscopy for clinically significant polyps. Long-term observational CTC cohorts confirm safety for established polyp size thresholds in terms of test positivity and screening and surveillance intervals. Excellent technique with cathartic bowel preparation, stool tagging, and colonic distention is necessary for high-quality imaging and interpretation, particularly in detection of flat sessile serrated lesions (SSLs). Large SSLs and adenomatous polyps are the most relevant benign precursor lesions to CRC and are the main target of a primary prevention screening strategy. Only CTC and colonoscopy are sufficiently accurate for primary prevention, whereas stool-based and recently approved blood-based tests are limited to detection of cancer in a shorter screening window. CTC allows for selective polypectomy by risk-stratifying large polyps for removal, surveilling small polyps, and ignoring diminutive lesions. CTC is more efficient at identifying advanced neoplasia compared with a universal polypectomy strategy of colonoscopy only, which removes more pseudodisease and incurs excess risk of colonic perforation without benefit. Despite abundant evidence supporting CTC as an ideal screening test, it suffers from widespread and worsening underutilization due to barriers affecting radiology practice and physician support. Opportunistic screening and national trends in the CRC screening landscape will impact future uptake of CTC.</p>","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 10","pages":"e260016"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149118693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Invited Commentary: Advancing Screening CT Colonography: Timely Update and Call to Action.","authors":"Kevin J Chang, Judy Yee","doi":"10.1148/rg.260202","DOIUrl":"https://doi.org/10.1148/rg.260202","url":null,"abstract":"","PeriodicalId":54512,"journal":{"name":"Radiographics","volume":"46 10","pages":"e260202"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149118623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}