AJR. American journal of roentgenology
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AJR Am J Roentgenol · Jul 2011
ReviewMR enterography of Crohn disease: part 1, rationale, technique, and pitfalls.
The purpose of this article is to review the technique of performing MR enterography examinations and to review the imaging findings suggestive of Crohn disease. This article will also allow the reader to self-assess and improve his or her skills in the performance and interpretation of MR enterography examinations. ⋯ MRI plays a valuable role in providing accurate information about the severity of and complications related to Crohn disease and can help in guiding surgical or medical treatment.
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The purpose of this article is to review some of the most common reasons for ultrasound intervention around the hip joint, and describe the techniques involved. ⋯ Ultrasound alleviates the need for exposure to radiation and is already the modality of choice for aspiration of the hip joint, an intervention that may be helpful in guiding antimicrobial therapy and help avoid the need for surgical intervention. Ultrasound can also be used to access the hip for diagnostic or therapeutic injection.
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AJR Am J Roentgenol · Jul 2011
High-resolution MR neurography: evaluation before repeat tarsal tunnel surgery.
The purpose of this study was to retrospectively determine the accuracy of high-resolution MR neurography (MRN) in presurgical evaluation before repeat tarsal tunnel surgery. ⋯ MRN yields accurate morphologic information about the location and extent of nerve injury after failed tarsal tunnel release and facilitates preoperative diagnosis.
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AJR Am J Roentgenol · Jul 2011
Adrenal masses in patients with cancer: PET/CT characterization with combined CT histogram and standardized uptake value PET analysis.
Our purpose was to determine the diagnostic performance of 18F-FDG PET/CT for characterizing adrenal masses in patients with cancer, combining standardized uptake value (SUV) and CT histogram analysis. ⋯ The combination of SUV and CT histogram analysis allowed us to significantly improve the PET/CT diagnostic accuracy for characterizing adrenal lesions, leading to a significant reduction in the number of false-positive cases.
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AJR Am J Roentgenol · Jul 2011
Evolution of hypointense hepatocellular nodules observed only in the hepatobiliary phase of gadoxetate disodium-enhanced MRI.
We sought to determine whether hypointense hepatocellular nodules observed in the hepatobiliary phase of MRI enhanced with gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (gadoxetate disodium) progress to hypervascular hepatocellular carcinoma. ⋯ Hypointense nodules with a maximum diameter of at least 15 mm often become hypervascular. Therefore, patients with hypointense nodules characterized by a maximum diameter of 15 mm or greater should be observed carefully because of the high incidence of vascularization.