一种使用低场磁共振成像系统监测组织温度的有效方法。

An effective method for monitoring tissue temperature using low-field MRI system.

作者信息

Chen Yuping, Ge Mengke, Jiang Hejun, Wang Lulu, Qiu Bensheng

机构信息

Centers for Biomedical Engineering, University of Science and Technology of China, Hefei, Anhui, China.

School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei, Anhui, China.

出版信息

Technol Health Care. 2018;26(3):565-570. doi: 10.3233/THC-181236.

DOI:10.3233/THC-181236

PMID:29630573

Abstract

This technical note describes an effective method for monitoring temperature based on the minimum curvature surface fitting (MCSF) referenceless proton resonance frequency shift (PRFs) at 0.35 T. Experimental tests on phantom, ex vivo porcine livers and human brain were conducted. A comparison study between the proposed method and a fiber optic temperature probe was conducted for microwave (MW) ablation. Experimental results showed that temperature root mean square error (RMSE) calculated by MCSF model were lower than those computed by high-order polynomial fitting. For ablation experiments, the temperature errors between temperature probe and MCSF method were all less than 2∘C.

摘要

本技术说明描述了一种基于0.35 T下的最小曲率表面拟合（MCSF）无参考质子共振频率偏移（PRF）来监测温度的有效方法。对体模、离体猪肝和人脑进行了实验测试。针对微波（MW）消融，对所提出的方法与光纤温度探头进行了比较研究。实验结果表明，由MCSF模型计算出的温度均方根误差（RMSE）低于通过高阶多项式拟合计算出的误差。对于消融实验，温度探头与MCSF方法之间的温度误差均小于2摄氏度。