MR safety in patients with implanted deep brain stimulation systems (DBS).
MR safety in patients with implanted deep brain stimulation systems (DBS).
复制标题
植入深部脑刺激系统 (DBS) 的患者的 MR 安全性。
DOI：
10.1007/978-3-7091-6081-7_30
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Shellock,FG
中科院分区：
文献类型：
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作者：
Sharan,A;Rezai,AR;Nyenhuis,JA;Hrdlicka,G;Tkach,J;Baker,K;Turbay,M;Rugieri,P;Phillips,M;Shellock,FG
虽然对使用深部脑刺激器（DBS）的患者进行MRI检查是可取的，但存在一个主要的安全问题，即由磁致电流引起的过度加热的可能性。本研究旨在确定MRI和DBS的安全性。方法对DBS系统的标准配置进行测试。体外测试使用1.5特斯拉的MR系统、凝胶填充的假体以及具有不同水平射频能量（SAR）的身体和头部射频线圈进行。使用荧光光学测温系统记录温度。结果使用1.5 t MRI和身体射频发射线圈，温度变化范围为2.5 ~ 25.3°C。使用1.5 t MRI和头部射频发射线圈，温度变化范围为2.3至7.1°C。结论在一定的磁共振成像条件下，确实会出现过度发热。在本研究确定的某些条件下，DBS患者可以安全地进行解剖磁共振成像。在未来，将需要标准化的测试和更全面的研究来确保神经刺激系统的MR安全性。
IntroductionWhile it is desirable to perform MRI examinations in patients with deep brain stimulators (DBS), a major safety concern exists regarding the potential for excessive heating secondary to magnetically induced electrical currents. This study was designed to determine the safety of MRI and DBS.MethodsStandard configurations of DBS systems were tested. In vitro testing was performed using a 1.5-Tesla MR system, a gel-filled phantom, and the body and head RF coils with varying levels of RF energy (SAR). A fluoroptic thermometry system was used to record temperatures.ResultsUsing the 1.5-T MRI and body RF transmit coil, the temperature changes ranged from 2.5 to 25.3 °C. Using the 1.5-T MRI and head RF transmit coil, the temperature changes ranged from 2.3 to 7.1 °C.ConclusionsExcessive heating does occur with certain MR imaging conditions. Under certain conditions determined in this study, patients with DBS may safely undergo anatomical MR imaging. In the future, standardized testing and more comprehensive studies will be needed to ensure the MR safety of neurostimulation systems.