Details:

Alternative Title:
Finite Elem Anal Des
Personal Author:
Ji, Songbai ; Ford, James C. ; Greenwald, Richard M. ; Beckwith, Jonathan G. ; Paulsen, Keith D. ; ... More +
Ji, Songbai ; Ford, James C. ; Greenwald, Richard M. ; Beckwith, Jonathan G. ; Paulsen, Keith D. ; Flashman, Laura A. ; McAllister, Thomas W. Less -
Description:
Generating subject-specific, all-hexahedral meshes for finite element analysis continues to be of significant interest in biomechanical research communities. To date, most automated methods "morph" an existing atlas mesh to match with a subject anatomy, which usually result in degradation in mesh quality because of mesh distortion. We present an automated meshing technique that produces satisfactory mesh quality and accuracy without mesh repair. An atlas mesh is first developed using a script. A subject-specific mesh is generated with the same script after transforming the geometry into the atlas space following rigid image registration, and is transformed back into the subject space. By meshing the brain in 11 subjects, we demonstrate that the technique's performance is satisfactory in terms of both mesh quality (99.5% of elements had a scaled Jacobian >0.6 while <0.01% were between 0 and 0.2) and accuracy (average distance between mesh boundary and geometrical surface was 0.07 mm while <1% greater than 0.5mm). The combined computational cost for image registration and meshing was <4 min. Our results suggest that the technique is effective for generating subject-specific, all-hexahedral meshes and that it may be useful for meshing a variety of anatomical structures across different biomechanical research fields.
Subject:
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Article
Automatic Mesh Generation
Biomechanics
Finite Element Analysis
Hexahedral
Mesh Quality
Mutual Information
Subject-specific
Traumatic Brain Injury

Source:
Finite Elem Anal Des. 47(10):1178-1185
Pubmed ID:
21731153
Pubmed Central ID:
PMC3124828
Document Type:
Journal Article
Funding:
R01 NS055020-05/NS/NINDS NIH HHS/United States ; R01 CE001254/CE/NCIPC CDC HHS/United States ; R01 NS055020/NS/NINDS NIH HHS/United States ; R01 HD048638/HD/NICHD NIH HHS/United States ; R01 HD048638-05/HD/NICHD NIH HHS/United States
R01 NS055020-05/NS/NINDS NIH HHS/United States ; R01 CE001254/CE/NCIPC CDC HHS/United States ; R01 NS055020/NS/NINDS NIH HHS/United States ; R01 HD048638/HD/NICHD NIH HHS/United States ; R01 HD048638-05/HD/NICHD NIH HHS/United States Less -
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:0f8f56563f7902f3c1f3c32cb4b5972beeae8d70cf15ceaa00f5826448c9946a
File Type:

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