5-D model for accurate representation and visualization of dynamic cardiac structures

Wei te Lin, Richard A. Robb

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

Accurate cardiac modeling is challenging due to the intricate structure and complex contraction patterns of myocardial tissues. Fast imaging techniques can provide four-dimensional structural information acquired as a sequence of 3-D images throughout the cardiac cycle. To model the beating heart, we created a physics-based surface model that deforms between successive time points in the cardiac cycle. 3-D Images of canine hearts were acquired during one complete cardiac cycle using the Dynamic Spatial Reconstructor (DSR) and the Electron Beam CT (EBCT). The left ventricle of the first time point is reconstructed as a triangular mesh. A mass-spring physics-based deformable model, which can expand and shrink with local contraction and stretching forces distributed in an anatomically accurate simulation of cardiac motion, is applied to the initial mesh and allows the initial mesh to deform to fit the left ventricle in successive time increments of the sequence. The resulting 4-D model can be interactively transformed and displayed with associated regional electrical activity mapped onto anatomic surfaces, producing a 5-D model, which faithfully exhibits regional cardiac contraction and relaxation patterns over the entire heart. The model faithfully represents structural changes throughout the cardiac cycle. Such models provide the framework for minimizing the number of time points required to usefully depict regional motion of myocardium and allow quantitative assessment of regional myocardial motion. The electrical activation mapping provides spatial and temporal correlation within the cardiac cycle. In procedures such as intra-cardiac catheter ablation, visualization of the dynamic model can be used to accurately localize the foci of myocardial arrhythmias and guide positioning of catheters for optimal ablation.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Pages322-329
Number of pages8
Volume3911
StatePublished - 2000
EventBiomedical Diagnostic, Guidance, and Surgical-Assist Systems II - San Jose, CA, USA
Duration: Jan 25 2000Jan 26 2000

Other

OtherBiomedical Diagnostic, Guidance, and Surgical-Assist Systems II
CitySan Jose, CA, USA
Period1/25/001/26/00

Fingerprint

Visualization
cycles
contraction
mesh
Catheters
Ablation
ablation
Physics
arrhythmia
myocardium
physics
imaging techniques
dynamic models
positioning
Stretching
Electron beams
Dynamic models
Chemical activation
activation
electron beams

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Lin, W. T., & Robb, R. A. (2000). 5-D model for accurate representation and visualization of dynamic cardiac structures. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3911, pp. 322-329). SPIE.

5-D model for accurate representation and visualization of dynamic cardiac structures. / Lin, Wei te; Robb, Richard A.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3911 SPIE, 2000. p. 322-329.

Research output: Chapter in Book/Report/Conference proceedingChapter

Lin, WT & Robb, RA 2000, 5-D model for accurate representation and visualization of dynamic cardiac structures. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3911, SPIE, pp. 322-329, Biomedical Diagnostic, Guidance, and Surgical-Assist Systems II, San Jose, CA, USA, 1/25/00.
Lin WT, Robb RA. 5-D model for accurate representation and visualization of dynamic cardiac structures. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3911. SPIE. 2000. p. 322-329
Lin, Wei te ; Robb, Richard A. / 5-D model for accurate representation and visualization of dynamic cardiac structures. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3911 SPIE, 2000. pp. 322-329
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