A 7T magnetic resonance thermometry (MRT) technique was developed to validate the conversion factor between the system‐measured transmitted radiofrequency (RF) power into a home‐built RF wrist coil with the system‐predicted SAR value. The conversion factor for a new RF coil developed for ultra high magnetic field MRI systems is used to ensure that regulatory limits on RF energy deposition in tissue, specifically the local 10g‐averaged specific absorption rate (SAR_10g), are not exceeded. MRT can be used to validate this factor by ensuring that MRT‐measured SAR values do not exceed those predicted by the system.

中文翻译：

---

7T MR测温技术用于验证系统预测SAR与自制射频腕线圈

开发了一种 7T 磁共振测温 (MRT) 技术，以验证系统测量的发射射频 (RF) 功率与具有系统预测 SAR 值的自制射频手腕线圈之间的转换因子。为超高磁场 MRI 系统开发的新射频线圈的转换系数用于确保不超过对组织中射频能量沉积的监管限制，特别是不超过局部 10g 平均比吸收率 (SAR _{10g )。}MRT 可用于通过确保 MRT 测量的 SAR 值不超过系统预测的值来验证这一因素。