一种可拆装式的脑外科手术用磁共振成像线圈

在临床磁共振成像(MRI)应用中，射频线圈的设计是非常关键的，针对不同的应用目的,合适的线圈能获得质量更好的图像. 有的应用需要线圈提供均匀性较好的射频场，而有的应用则需要线圈在特定区域内提供高的信噪比(SNR). 但是线圈很难同时得到好的射频场（B₁场）、空间均匀性和高的SNR，需要根据实际应用情况进行折衷设计. 针对MRI在脑外科手术中的应用特点，设计并制作了一种新颖的、适用于脑外科手术的MRI接收和发射共用射频线圈. 该线圈采用可分拆式结构，在脑外科手术支架上可以进行反复组装和拆卸，减少了MRI对医生手术的影响. 仿真结果和人体成像实验表明，该线圈能产生均匀的射频场、有较高的SNR和较大的成像范围，满足脑外科手术的需要.

A Detachable Interventional Magnetic Resonance Imaging Coil for Cerebral Surgery

High-quality radio frequency (RF) coils are crucial for clinical magnetic resonance imaging (MRI). However, it is often difficult to achieve a uniform B₁ field and a high SNR simultaneously with traditionally-designed coils. In this article, we present an interventional transmitter-and-receiver RF coil for neurosurgery. This coil adopts a detachable structure that can be assembled and disassembled repeatedly on the neurosurgery gantry to reduce the interference from MRI to surgery. The simulation results and imaging experiments demonstrated that this coil is capable of producing a uniform RF field, a high SNR and a large imaging range simultaneously to meet the requirements of clinical neurosurgery.