Automatic ellipsoidal ROI placement for heart localization
R Reeve Ingle1, Kangrong Zhu2, N Okai Addy1, Ken O Johnson1, Michelle M Nystrom1, William R Overall1, Galen D Reed1, Bob S Hu1,3, and Juan M Santos1
1HeartVista, Inc., Menlo Park, CA, United States, 2Electrical Engineering, Stanford University, Stanford, CA, United States, 3Cardiology, Palo Alto Medical Foundation, Palo Alto, CA, United States
A 3D heart localization algorithm is proposed to automatically determine the placement and orientation of a 3D ellipsoidal ROI for optimal heart coverage. A fast, multi-slice scout scan is used to acquire a time series of cardiac-triggered images covering the heart. These images are used by the algorithm to automatically compute a cardiac motion map for the proposed ellipsoid fitting optimization. In eight subject scans, the algorithm is shown to yield good ellipsoidal placement and orientation that is in good conformance with the shape and position of the heart.
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