Radiology
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This magnetic resonance (MR) imaging study was approved by the institutional review board and was HIPAA compliant. Written informed consent was obtained from all participants. The purpose of the study was to prospectively compare T1-weighted inversion recovery with short inversion time inversion recovery (STIR) and dual fast spin echo (FSE) for imaging cervical spinal cord lesions in patients with multiple sclerosis (MS). ⋯ Normalized contrast between lesion and normal-appearing spinal cord was significantly higher for T1-weighted inversion recovery than for the other sequences (P < .0001). Use of phase-sensitive reconstruction improved lesion localization and boundary definition. These advantages of T1-weighted inversion recovery over STIR and dual-echo FSE suggest that it has potential in cervical spinal cord imaging of MS. (c) RSNA, 2007.
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To retrospectively determine the accuracy of direct magnetic resonance (MR) arthrography of the shoulder in patients with recurrent or residual signs and/or symptoms of instability after prior instability repair, with surgical findings as the reference standard. ⋯ Direct MR arthrography is accurate (91.9%) for assessing labral pathologic conditions and other internal derangements of the shoulder in patients with recurrent or residual signs and/or symptoms after prior shoulder instability repair.
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To prospectively and externally validate published national and international guidelines for the indications of computed tomography (CT) in patients with a minor head injury. ⋯ radiology.rsnajnls.org/cgi/content/full/2452061509/DC1 (c) RSNA, 2007.
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The development of newer generations of multidetector computed tomographic (CT) scanners capable of enabling accurate assessment of the coronary arteries in conjunction with the increasing placement of CT scanners near the emergency department has raised interest in using CT to provide a comprehensive imaging evaluation of patients presenting with acute chest pain. In this article, the authors review the challenges surrounding the current clinical and imaging work-up of chest pain in the emergency room and provide a framework for understanding the potential role of CT.