Three Tesla MR Imaging: Diffusion Tensor Imaging and Tractography of the Median Nerve—Technique, Normal Anatomy, and Pathology (original) (raw)

Abstract

PURPOSE/AIM 1. Describe the technique of data acquisition on a 3-T MRI system. 2. Discuss the relationship of fractional anisotrophy (FA) and apparent diffusion coeficient (ADC) values between normal and pathologic cases. 3. Illustrate with comparative examples, the normal anatomy and the most frequent median nerve pathology of the wrist. CONTENT ORGANIZATION The exhibit includes: 1- Diffusion Tensor Imaging at 3T MR imaging: principles. 2- The normal median nerve: normal appearance. 3- Fractional anisotrophy (FA) and apparent diffusion coeficient (ADC) of the normal median nerve. 4- Pathologic conditions involving the median nerve: carpal tunnel syndrome, fibrolipomatous hamartoma. SUMMARY 3-T MR imaging “DTI” and tractography can be helpful in evaluation and diagnosis of different neuropathies of the wrist involving median nerve. At the end of this educational exhibit, the reader will be able to recognise normal and pathologic behavior using this technique.

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