TY - JOUR
T1 - 3D MRI-based multicomponent thin layer structure only plaque models for atherosclerotic plaques
AU - Huang, Xueying
AU - Yang, Chun
AU - Zheng, Jie
AU - Bach, Richard
AU - Muccigrosso, David
AU - Woodard, Pamela K.
AU - Tang, Dalin
N1 - Funding Information:
This research was supported in part by NSF Grant DMS-0540684 and NIH Grant R01 EB004759 . Dr. Xueying Huang׳s research was partially supported by National Natural Science Foundation of China (Grant no. 31100670 ) and Fundamental Research Funds for the Central Universities (Grant no. 20720150008 ). Professor Chun Yang׳s research was supported in part by National Sciences Foundation of China Grant 11171030 .
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/9/6
Y1 - 2016/9/6
N2 - MRI-based fluid-structure interactions (FSI) models for atherosclerotic plaques have been developed to perform mechanical analysis to investigate the association of plaque wall stress (PWS) with cardiovascular disease. However, the time consuming 3D FSI model construction process is a great hinder for its clinical implementations. In this study, a 3D thin-layer structure only (TLS) plaque model was proposed as an approximation with much less computational cost to 3D FSI models for better clinical implementation potential. 192 TLS models were constructed based on 192 ex vivo MRI Images of 12 human coronary atherosclerotic plaques. Plaque stresses were extracted from all lumen nodal points. The maximum value of Plaque wall stress (MPWS) and average value of plaque wall stress (APWS) of each slice were used to compare with those from corresponding FSI models. The relative errors for MPWS and APWS were 9.76% and 9.89%, respectively. Both MPWS and APWS values obtained from TLS models showed very good correlation with those from 3D FSI models. Correlation results from TLS models were in consistent with FSI models. Our results indicated that the proposed 3D TLS plaque models may be used as a good approximation to 3D FSI models with much less computational cost. With further validation, 3D TLS models may be possibly used to replace FSI models to save time and perform mechanical analysis for atherosclerotic plaques for clinical implementation.
AB - MRI-based fluid-structure interactions (FSI) models for atherosclerotic plaques have been developed to perform mechanical analysis to investigate the association of plaque wall stress (PWS) with cardiovascular disease. However, the time consuming 3D FSI model construction process is a great hinder for its clinical implementations. In this study, a 3D thin-layer structure only (TLS) plaque model was proposed as an approximation with much less computational cost to 3D FSI models for better clinical implementation potential. 192 TLS models were constructed based on 192 ex vivo MRI Images of 12 human coronary atherosclerotic plaques. Plaque stresses were extracted from all lumen nodal points. The maximum value of Plaque wall stress (MPWS) and average value of plaque wall stress (APWS) of each slice were used to compare with those from corresponding FSI models. The relative errors for MPWS and APWS were 9.76% and 9.89%, respectively. Both MPWS and APWS values obtained from TLS models showed very good correlation with those from 3D FSI models. Correlation results from TLS models were in consistent with FSI models. Our results indicated that the proposed 3D TLS plaque models may be used as a good approximation to 3D FSI models with much less computational cost. With further validation, 3D TLS models may be possibly used to replace FSI models to save time and perform mechanical analysis for atherosclerotic plaques for clinical implementation.
KW - Fluid-structure interactions
KW - Stress
KW - Thin layer structure only model
KW - Vulnerable atherosclerotic plaques
UR - http://www.scopus.com/inward/record.url?scp=84995555386&partnerID=8YFLogxK
U2 - 10.1016/j.jbiomech.2016.06.002
DO - 10.1016/j.jbiomech.2016.06.002
M3 - Article
C2 - 27344199
AN - SCOPUS:84995555386
SN - 0021-9290
VL - 49
SP - 2726
EP - 2733
JO - Journal of Biomechanics
JF - Journal of Biomechanics
IS - 13
ER -