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MR neurographyは,撮像部位,想定される疾患で撮像法を変える必要がある。腕神経叢,腰仙骨神経叢を評価する場合は,3D-STIRなどの3D spin echo法が使われることが多い。あらかじめ,撮像法を準備し,正常像を把握しておくとよい。当院での撮像条件を提示するので,参考にしてほしい。神経肥厚,信号上昇,左右差,口径不整に注目して読影する。定性評価の標準化,技術革新による定量化が試みられている。
Abstract
Magnetic resonance neurography requires varying imaging techniques based on the site of imaging and anticipated disease. In assessing the brachial and lumbosacral plexus, a three-dimensional (3D) spin echo method, such as 3D-short tau inversion recovery imaging, is frequently employed. It's beneficial to familiarize oneself with the imaging sequence and understand the appearance of normal images in advance. The imaging parameters used in our institute are provided below as a reference. When interpreting the images, pay close attention to nerve thickening, signal intensity changes, asymmetry between the left and right sides, and irregularities in nerve caliber. Efforts are underway to standardize qualitative assessments and quantify signals through technological advancements.
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