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Advances in imaging techniques have evolved, allowing for early noninvasive diagnosis and improved management of high-risk patients with hepatocellular carcinoma (HCC). The hallmark imaging features of HCC on multiphasic cross-sectional imaging can be explained by the multistep process of hepatocarcinogenesis and is seen in 60% of cases. However, approximately 40% of cases do not abide by the classic imaging appearance and may pose a diagnostic challenge for radiologists.
View Article and Find Full Text PDFCT Angiography of the Upper Extremities: Review of Acute Arterial Entities.
Radiographics
January 2025
From the Mallinckrodt Institute of Radiology, Washington University in St. Louis School of Medicine, 510 S Kingshighway Blvd, St. Louis, MO 63110.
Historically, evaluation of the upper extremity vasculature was performed using digital subtraction angiography. With the advancement of cross-sectional imaging and submillimeter isotropic data acquisition, CT angiography (CTA) has become an excellent noninvasive diagnostic tool for evaluation of the vasculature of the upper extremities. CTA allows quick evaluation of vessel patency and irregularity and achievement of the anatomic detail needed in preoperative planning.
View Article and Find Full Text PDFNuclear Medicine Imaging in Epilepsy.
Radiographics
January 2025
From the Department of Radiology, University of Cincinnati Medical Center, 3188 Bellevue Ave, Cincinnati, OH 45219 (A.S., A.T.T., B.W.M., L.L.W., J.L.S.); and Department of Radiology, Cincinnati Children's Hospital and Medical Center, Cincinnati, OH (A.T.T.).
Approximately one-third of patients with focal epilepsy have medically refractory focal epilepsy (MRFE), which significantly impacts their quality of life. Once a seizure focus is identified and determined to be in the noneloquent cortex, it can be surgically resected with the goal of freedom from seizures and minimal neurocognitive deficit. During noninvasive (phase I) presurgical planning, functional (nuclear) imaging and structural imaging are complementary in the accurate localization of the epileptogenic zone (EZ).
View Article and Find Full Text PDFArtefacts and diagnostic pitfalls in contrast-enhanced mammography: a pictorial review.
Clin Radiol
November 2024
Department of Radiology and Nuclear Medicine, Tuen Mun Hospital, 23 Tsing Chung Koon Road, Tuen Mun, N.T, Hong Kong; Department of Radiology, Pok Oi Hospital, Au Tau, Yuen Long, N.T., Hong Kong.
Contrast-enhanced mammography (CEM) is an advanced emerging imaging technique that uses iodine contrast medium to improve breast cancer detection. Understanding CEM artefacts and pitfalls is important to prevent diagnostic misinterpretation. This article aims to provide a comprehensive review of the artefacts and potential diagnostic pitfalls encountered in CEM, focusing on their characteristic imaging features and strategies to mitigate these issues.
View Article and Find Full Text PDFPitfalls of computed tomography angiography examination in veno-arterial extracorporeal membrane oxygenation patients: a case report of a patient with cardiac rupture.
J Cardiothorac Surg
December 2024
Department of Critical Care, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, 317000, China.
Background: Veno-arterial (V-A) extracorporeal membrane oxygenation (ECMO) is commonly used for patients with cardiac arrest, cardiogenic shock, or heart failure and is a life-saving technique. Computed tomography angiography (CTA) examination in patients on ECMO presents certain challenges. Due to the dual circulation characteristics of blood flow in ECMO patients, vascular imaging and interpretation can be difficult and may even present pitfalls.
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