Results

6. Results

The original heart model from New York University (used with the permission of New York University, ©1994-2004) and the modified model.

(a) Aortic valve.
(b) Tricuspid valve.
(c) Pulmonary valve.
(d) Mitral valve.
(a’) Modified aortic valve.
(b’) Modified tricuspid valve.
(c’) Modified pulmonary valve.
(d’) Modified mitral valve.
(e) Foramen ovale connecting the left and right atriums with a comparison of the original and modified forms.

Adaptive Tetrahedral Meshes for the Heart Model

(a) Heart model viewed from the outside.
(b) Result of boundary detection in wireframe, each of the twenty-two components of the heart model is represented by a different color.
(c) Cross section of the adaptive tetrahedral mesh, it is obvious that the valves have the finest mesh, thin structures are identified by the feature sensitive error function, and adaptive meshes are generated to preserve correct topology.

Four Valves with Gaps in the Adaptive Tetrahedral Mesh of the Cardiac Model

(a) Aortic valve. (b) Tricuspid valve. (c) Pulmonary valve. (d) Mitral valve.

The Result of Material Layer Detection in the Extracted Tetrahedral Meshes — The Interface between the Mitral Valve and the Myocardium is Identified

(a) Cross section of the mitral valve before material layer detection. (b) Cross section of the mitral valve after material layer detection.