Study on isotropic elasticity reconstruction algorithms for magnetic resonance elastography
10.7687/j.issn1003-8868.2017.06.01
- VernacularTitle:基于局部各向同性假设的磁共振弹性重构算法研究
- Author:
Li DING
;
Liangliang HU
;
Bingnan LI
- Keywords:
magnetic resonance elastography;
elastic moduli;
reconstruction algorithm;
mathematical assumption
- From:
Chinese Medical Equipment Journal
2017;38(6):1-6
- CountryChina
- Language:Chinese
-
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.
