Three dimensional modeling of the left ventricle of the heart using spherical harmonic analysis

Myocardial scintigraphy SPECT (single photon emission computed tomography) is a functional imaging modality which is performed at stress and rest. The diagnosis is obtained by comparing myocardium blood flow at these two different patient states. We propose to add at this technique completely non invasive anatomical data to avoid the use of invasive modalities like coronarography for example. For this purpose, we intend to extend the powerful technique of 2D Fourier descriptor to 3D objects by modeling the left ventricle at stress and at rest using the spherical harmonic descriptors so as to provide quantitative information to the physician to evaluate the extent of an eventual ischemia.