7特斯拉(T)磁共振成像(MRI)的使用正在神经外科和神经系统专业中扩展。然而,很少有神经外科相关的植入物在7T时进行了安全性测试,限制其在颅骨固定患者中的使用,分流位置,和其他植入物。植入物的安全性可以通过美国材料试验协会(ASTM)指南来确定。为了评估7T时神经外科植入物的安全现状,使用PubMed进行了系统搜索,MEDLINE,WebofKnowledge,和引文匹配。包括至少一个神经外科植入物和至少一个安全结果的英文研究。提取了植入物研究的数据,植入物组合物,偏转角,扭矩,温度变化,遵循ASTM指南。遵循PRISMA报告范围审查指南。总的来说,包括由45种独特植入物组成的18项研究。植入物包括颅骨固定装置,动脉瘤夹,脊柱棒,椎弓根螺钉,脑室-腹膜(VP)分流,深部脑刺激装置,和脑电图(EEG)帽和电极。颅骨固定装置,深部脑刺激装置,脊柱棒,根据报告的结果,椎弓根螺钉可能与7TMRI兼容。动脉瘤夹和EEG设备具有不同的安全性结果。VP分流研究了7TMRI暴露后功能丧失。我们确定了几种可能与7TMRI兼容的植入物。鉴于7T成像的增长和技术的扩展,神经外科植入物应考虑上述因素。所有植入物都必须小心,尤其是动脉瘤夹,可编程VP分流器,和脑电图记录设备。还值得注意的是,一些植入物测试报告没有按照ASTM标准报告。本范围审查旨在简要总结所有已在7TMRI中进行安全性测试的神经外科相关植入物。证据级别:2技术效率:第2阶段。
The use of 7 Tesla (T) magnetic resonance imaging (MRI) is expanding across neurosurgical and neurologic specialties. However, few neurosurgical-related implants have been tested for safety at 7 T, limiting its use in patients with cranial fixation, shunt placements, and other implants. Implant safety can be determined via the American Society for Testing Materials International (ASTM) guidelines. To assess the current state of neurosurgical implant safety at 7 T, a systematic search was performed using PubMed, MEDLINE, Web of Knowledge, and citation matching. Studies written in English that included at least one neurosurgical implant and at least one safety outcome were included. Data were extracted for implant studied, implant composition, deflection angle, torque, temperature change, and ASTM guidelines followed. PRISMA reporting guidelines for scoping reviews were followed. Overall, 18 studies consisting of 45 unique implants were included. Implants included cranial fixation devices, aneurysm clips, spinal rods, pedicle screws, ventriculoperitoneal (VP) shunts, deep brain stimulation devices, and electroencephalogram (EEG) caps and electrodes. Cranial fixation devices, deep brain stimulation devices, spinal rods, and pedicle screws are likely 7 T MRI compatible based on outcomes reported. Aneurysm clips and EEG devices had variable safety outcomes. The VP shunts studied lost functionality after 7 T MRI exposure. We identified several implants that are likely compatible with 7 T MRI. Given the growth in 7 T imaging and expansion of the technology, neurosurgical implants should be constructed with the aforementioned considerations. Caution must be taken with all implants, especially aneurysm clips, programmable VP shunts, and EEG recording devices. It is also noteworthy that several implant testing reports did not report following ASTM standards. This scoping review seeks to concisely summarize all neurosurgical-related implants that have been tested for safety in 7 T MRI. EVIDENCE LEVEL: 2 TECHNICAL EFFICACY: Stage 2.