AJR. American journal of roentgenology
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The aim of our study was to show that spatial resolution can be improved without loss of diagnostic accuracy if a 3D inversion recovery gradient-recalled echo (GRE) sequence is used instead of a segmented inversion recovery GRE at 3 T for the assessment of myocardial infarction. ⋯ The use of a 3D inversion recovery GRE sequence at 3 T allows accurate assessment of myocardial infarction without loss of CNR compared with the standard 2D technique. Furthermore, data acquisition time can be significantly reduced.
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AJR Am J Roentgenol · Jun 2009
Diffusion tensor imaging and fiber tractography of skeletal muscle: optimization of B value for imaging at 1.5 T.
The aim of our study was to determine the optimal b value for 1.5-T diffusion tensor (DT) MRI and fiber tractography of in vivo human skeletal muscle. ⋯ The optimal b value for in vivo DT MRI and tractographic assessment of human skeletal muscle in the calf at 1.5 T MRI was found to be 625 s/mm(2).
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AJR Am J Roentgenol · Jun 2009
ReviewMRI findings in inflammatory muscle diseases and their noninflammatory mimics.
The purpose of this article is to provide a practical review of the spectrum of MRI findings in inflammatory muscle diseases and their noninflammatory mimics. ⋯ MRI is a highly sensitive tool for the diagnosis of muscle diseases. Although it has low specificity, awareness of the potential imaging findings in the various, sometimes rare, muscular disorders is helpful for accurate diagnosis.
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We review the basics of functional renal imaging and highlight a few clinical applications. ⋯ Techniques such as contrast-enhanced MR renography, diffusion-weighted imaging, and blood oxygen level-dependent MRI have been investigated in animal models and in a few human studies. Functional renal imaging is a rapidly growing field that has the potential to provide new insight into the pathophysiology of renal disease.
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Blunt and penetrating abdominal trauma can cause significant injury to the genitourinary organs, and radiologic imaging plays a critical role both in diagnosing these injuries and in determining the management. In this article, we describe and illustrate the spectrum of injuries that can occur in the genitourinary system in order to facilitate accurate and rapid recognition of the significant injuries. ⋯ Imaging plays a crucial role in the evaluation of the genitourinary tract in a patient who has suffered either blunt or penetrating trauma because multiorgan injury is common in such patients. Contrast-enhanced CT is the primary imaging technique used to evaluate the upper and lower urinary tract for trauma. Cystography and urethrography remain useful techniques in the initial evaluation and follow-up of trauma to the urinary bladder and urethra.