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首页> 外文期刊>Neurosurgery >An integrated radio frequency probe and cranial clamp for intraoperative magnetic resonance imaging: technical note.
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An integrated radio frequency probe and cranial clamp for intraoperative magnetic resonance imaging: technical note.

机译：用于术中磁共振成像的集成射频探头和颅骨夹：技术说明。

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摘要

OBJECTIVE: To design an integrated radio frequency (RF) head probe and cranial clamp for intraoperative magnetic resonance imaging (MRI) that do not interfere with the operating procedures. METHODS: A concept based on four inductively coupled rings was developed and applied for an intraoperative RF probe. The probe was integrated with a specially designed cranial clamp and incorporated into the intraoperative MRI system. RESULTS: The design of the RF probe allows splitting the probe into two separate parts; the lower two rings and matching ring are permanently incorporated into the patient table, and the two upper rings can be removed to expose the patient's head during neurosurgery. The probe produces a homogeneous B1 field over the entire region of interest with sufficient sensitivity to obtain high quality images. The cranial clamp, made of MRI compatible materials, is asymmetrical to allow variable head positioning. CONCLUSION: The described RF head probe and cranial clamp have been used successfully in more than 400 brain surgeries without compromising sterility of the operating area. Pre-, intra-, and postsurgical MRI scans have been obtained without a need to move a patient or reposition the head for imaging sessions. The images were of high quality and free of susceptibility or eddy currents artifacts. With minor modifications, the integrated RF probe and cranial clamp can be used successfully in other intraoperative MRI systems.
机译：目的：设计一种集成射频（RF）头探头和颅骨夹，用于不影响手术程序的术中磁共振成像（MRI）。方法：一个基于四个感应耦合环的概念被开发出来，并应用于术中射频探头。该探头与专门设计的颅骨夹集成在一起，并整合到术中MRI系统中。结果：RF探针的设计允许将探针分为两个单独的部分;下部的两个环和匹配环永久地合并到患者床中，在进行神经外科手术时，可以取下两个上部的环以露出患者的头部。探头在整个感兴趣区域上产生均匀的B1场，并具有足够的灵敏度以获得高质量的图像。颅骨夹由MRI兼容材料制成，不对称，可以进行可变的头部定位。结论：所描述的RF头探头和颅骨夹已成功用于400多个脑部手术中，而不会损害手术区域的无菌性。已经获得了术前，术中和术后MRI扫描，而无需移动患者或重新定位头部以进行成像。图像质量高，没有磁化率或涡流伪影。只需稍作修改，集成的RF探头和颅骨夹即可成功用于其他术中MRI系统。

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