Brachial plexus injury: Clinical manifestations, conventional imaging findings, and the latest imaging techniques

Takeharu Yoshikawa, Naoto Hayashi, Shinichi Yamamoto, Yasuhito Tajiri, Naoki Yoshioka, Tomohiko Masumoto, Harushi Mori, Osamu Abe, Shigeki Aoki, Kuni Ohtomo

研究成果: Article査読

135 被引用数 (Scopus)


Brachial plexus injury (BPI) is a severe neurologic injury that causes functional impairment of the affected upper limb. Imaging studies play an essential role in differentiating between preganglionic and postganglionic injuries, a distinction that is crucial for optimal treatment planning. Findings at standard myelography, computed tomographic (CT) myelography, and conventional magnetic resonance (MR) imaging help determine the location and severity of injuries. MR imaging sometimes demonstrates signal intensity changes in the spinal cord, and enhancement of nerve roots and paraspinal muscles at MR imaging indicates the presence of root avulsion injuries. New techniques including MR myelography, diffusion-weighted neurography, and Bezier surface reformation can also be useful in the evaluation and management of BPI. MR myelography with state-of-the-art technology yields remarkably high-quality images, although it cannot replace CT myelography entirely. Diffusion-weighted neurography is a cutting-edge technique for visualizing postganglionic nerve roots. Bezier surface reformation allows the depiction of entire intradural nerve roots on a single image. CT myelography appears to be the preferred initial imaging modality, with standard myelography and contrast material-enhanced MR imaging being recommended as additional studies. Work-up will vary depending on the equipment used, the management policy of peripheral nerve surgeons, and, most important, the individual patient.

出版ステータスPublished - 2006 10月

ASJC Scopus subject areas

  • 放射線学、核医学およびイメージング


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