Sudarshan Ramenahalli
ABSTRACT
The paper demonstrates accurate, anatomically correct 3D visualization of left and right ventricles of the human heart from tagged magnetic resonance imaging data. Tagged MRI reveals 3D structural and motion information that is incorporated into the visualized models. We use Non-Uniform Rational B-Splines (NURBS) for our purpose, that allow non-uniform knot specification and weight specification of control points, an advantage over traditional uniform B-Splines. NURBS algorithms are numerically stable and fast. The myocardial models serve the purpose of (i) accurate visualization of tag planes and myocardial walls, (ii)checking tag tracking accuracy and registration errors, (iii)providing framework for 4D visualization and motion analysis, and (iv)obtaining accurate, memory efficient and compactly supported models of the heart in anatomical dimensions. We obtain excellent results on normal as well as pathological patient datasets.
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Index Terms
- 3D visualization of cardiac tagged magnetic resonance image data using Non-Uniform Rational B-Splines (NURBS)
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