中国医疗设备2016，Vol.31Issue(5)：15-18,4.DOI:10.3969/j.issn.1674-1633.2016.05.004
1.5T、3T和7T下MR EPT核心算法在非均匀组织中的误差比较
Comparison of the Reconstruction Errors of the Currently Popular Algorithm of MR EPT in an Inhomogeneous Phantom at 1.5, 3 and 7 T
摘要
Abstract
This work compared the reconstruction errors (REs) of the currently popular algorithm of MR-based electrical properties tomography (MR EPT) while applied in inhomogeneous object at 1.5, 3 and 7 T. The B1+data of an inhomogeneous phantom were simulated at the three resonance frequencies. The currently popular algorithm of MR EPT was used to reconstruct the electrical property (EP) distributions inside the phantom. The absolute RE (aRE) and relative RE (rRE) maps in addition to the mean rREs were calculated to compare the REs occurring at different resonance frequencies. The maximums of maximum and mean rREs were observed at 1.5T, on the contrary, the minimums of maximum and mean rREs were observed at 7T. The REs varied with different resonance frequencies, and the REs decreased as the resonance frequency increased.关键词
磁共振介电特性成像/组织介电特性/非均匀模型/场强/误差分析Key words
MR-based electrical properties tomography/electrical properties/inhomogeneous phantom/resonance frequency/errors analysis分类
医药卫生引用本文复制引用
胥超,段松,王佳佳,胡灿,邓官华,何钧,张松涛,汤洪明,辛学刚..1.5T、3T和7T下MR EPT核心算法在非均匀组织中的误差比较[J].中国医疗设备,2016,31(5):15-18,4.基金项目
国家自然科学基金（61172034，61528102）；广东省自然科学基金（2015A030313234）；广东省省级科技计划项目（2015B020214006）；广州市科技计划项目（2014J4100160）；上海科技计划项目（15441907500）。 （）
