Schaefer D J
Magnetic Resonance Engineering, General Electric Medical Systems, Milwaukee, Wisconsin, 53201, USA.
Magn Reson Imaging Clin N Am. 1998 Nov;6(4):731-48.
At sufficient amplitude, gradient-induced electric fields may stimulate nerves and muscles in patients during MR examinations. This article reviews the physics, physiology, and safety aspects of nerve and muscle (including respiratory and cardiac) stimulation. This article also reviews experimental data on gradient-induced stimulation. While threshold stimulations are just perceptible, patients may experience pain at high electric field amplitudes. Safety margins required to prevent cardiac stimulation and to limit painful stimulations are investigated.
在足够的幅度下，梯度感应电场在磁共振检查期间可能会刺激患者的神经和肌肉。本文综述了神经和肌肉（包括呼吸和心脏）刺激的物理、生理和安全方面。本文还综述了关于梯度感应刺激的实验数据。虽然阈值刺激只是刚刚可察觉，但在高电场幅度下患者可能会感到疼痛。研究了防止心脏刺激和限制疼痛刺激所需的安全裕度。
