医疗卫生装备2017，Vol.38Issue(6)：1-6,6.DOI:10.7687/j.issn1003-8868.2017.06.01
基于局部各向同性假设的磁共振弹性重构算法研究
Study on isotropic elasticity reconstruction algorithms for magnetic resonance elastography
摘要
Abstract
Objective To analyze the advantages and disadvantages of various harmonic magnetic resonance elasticity reconstruction algorithms.Methods Different reconstruction algorithms were categorized according to their mathematical hypotheses.The influence of different assumptions on elasticity reconstruction was investigated with experiments and from mathematical fundamentals.Results The finite element full inversion method had higher precision while more computational time.The algorithms with local homogeneity and incompressibility assumptions were faster while less accurate.The algorithms considering the local change of elastic moduli could effectively reduce boundary artifacts.Conclnsion Different assumptions of algorithms may cause levels of errors between the estimated and real elastic moduli.The selection of elasticity reconstruction algorithms in practical experiment requires a comprehensive tradeoff.关键词
磁共振弹性成像/弹性模量/重构算法/数学假设Key words
magnetic resonance elastography/elastic moduli/reconstruction algorithm/mathematical assumption分类
医药卫生引用本文复制引用
丁丽,胡亮亮,李炳南..基于局部各向同性假设的磁共振弹性重构算法研究[J].医疗卫生装备,2017,38(6):1-6,6.基金项目
国家自然科学基金(61571176,61511140099) （61571176,61511140099）
安徽省杰出青年科学基金(1608085J04) （1608085J04）
安徽省国际科技合作计划(1503062015) （1503062015）
