Abstract #2621

Active Utilization of the Magic Angle Effect to Enhance Visualization of Upper Limb Peripheral Nerves

Ryuna Kurosawa¹, Hajime Yokota², Takayuki Sada¹, Keisuke Nitta¹, Issei Nakanishi^1,3, Hirotaka Sato¹, Koji Matsumoto¹, Namiki Takashi⁴, Yoneyama Masami⁴, Takashi Iimori¹, and Takashi Uno²

¹Department of Radiology, Chiba University Hospital, Chiba, Japan, ²Department of Diagnostic Radiology and Radiation Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan, ³Department of Legal Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan, ⁴Philips Japan, Tokyo, Japan

Synopsis

Keywords: Peripheral Nerves, Neurography, DESS, qDESS, The magic angle effect, T2 map

Motivation: This study aimed to improve the visualization of upper limb peripheral nerves in MR neurography (MRN) by utilizing the magic angle effect(MAE), which may enhance nerve imaging quality.

Goal(s): The study assessed how various elbow angles, especially 55°, affect nerve depiction in quantitative double-echo steady-state (qDESS) imaging.

Approach: Ten healthy volunteers were imaged at 0°, 30°, 45°, and 55° angles using a Philips 3.0T system; evaluations included quantitative and visual assessments.

Results: Nerve contrast significantly increased at 55°, indicating that leveraging MAE enhances nerve depiction for clinical assessments and surgical planning.

Impact: The magic angle effect enhanced neurography in qDESS improved the visualization of nerves, which has the potential to aid in diagnosing and monitoring neuropathy.

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