Seminars in ultrasound, CT, and MR
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Semin. Ultrasound CT MR · Jun 2009
Screening multidetector computed tomography angiography in the evaluation on blunt neck injuries: an evidence-based approach.
Blunt cerebrovascular injuries (BCVI) can cause ischemic stroke and are associated with high mortality rates. These injuries may have an initial silent course and if recognized in a timely fashion can be treated before neurologic deficit occurs. ⋯ However, in recent years, there has been a renewed interest in the use of noninvasive techniques, such as multidetector computed tomography angiography (MDCTA) for the evaluation of these patients. The accuracy of MDCTA with respect to digital subtraction angiography is not completely elucidated; however, MDCTA shows a level of accuracy sufficient to serve as an initial screening examination for blunt cerebrovascular injuries.
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This article reviews the role of imaging in the diagnosis of sinonasal tumors, illustrating the diversity of tumors affecting this region. The symptoms of sinonasal tumors are nonspecific; imaging plays a critical role in distinguishing benign and malignant disease and may occasionally illustrate characteristic radiological features of specific tumors. ⋯ Critical imaging review areas are discussed together with accurate staging, including orbital and intracranial involvement, which determine the appropriate surgical approach. The sites and patterns of tumor recurrence and the imaging features of recurrent tumor are also discussed.
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While omental infarction (OI) and acute epiploic appendagitis (AEA) often clinically mimic surgical abdomen, their management is distinct. As such, accurate and timely diagnosis is essential to follow medical management. Computed tomography and ultrasound imaging, utilized routinely in the evaluation of acute abdominal pain in the emergent setting, facilitate diagnosis and appropriate management of OI and AEA. The awareness of the clinical manifestations and imaging features of OI, AEA, and their mimics allow the radiologist to play a decisive role in triaging patients into surgical and medical management groups.
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Semin. Ultrasound CT MR · Oct 2008
ReviewComputed tomography in the nontraumatic renal causes of acute flank pain.
Renal colic pain due to obstructing stone is the main renal cause of acute flank pain. However, other causes may be responsible for the same clinical findings, including acute pyelonephritis, acute vascular conditions, and hemorrhage. The purpose of this review is to describe the differential diagnosis, the computed tomographic findings and pitfalls, and the role and impact of computed tomography in the diagnosis and management of the renal causes of acute flank pain.