Abstract

To assist in understanding a relationship between stenotic change in coronary arteries and change in myocardial function, we are developing a method of registration and superimposed display of the coronary arterial tree on a myocardial SPECT (Single Photon Emission Tomography). Firstly we introduce a fully 3-dimensional registration and display method. A 3- dimensionally reconstructed coronary arterial tree data is also transferred to a bull's eye map representation. We also introduce a semi 3-dimensional method. By this method, original 2-dimensional coronary angiograms are directly, i.e. without 3-dimensional reconstruction, transferred to a bull's eye map representation by referring a manually defined left ventricular long axis on angiograms and referring an epicardial surface data obtained from SPECT.

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