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The goal is to develop and evaluate two methods to extract interventricular sulcus (IS) from 4D cardiac gated (CG) myocardial perfusion (MP) PET images for use in quantitative cardiac motion estimation. In Method 1, the entire myocardium was first segmented from the 3D MP PET image of each CG frame by 3D region growing. The left ventricle (LV) was then extracted by 3D image erosion and dilation, and...
Respiratory motion is one image degradation factor that affects the resolution and may cause artifacts in PET imaging. Respiratory gating technique is able to reduce the blurring effects but results in higher noise level. Conventional motion correction methods that model motion effects during or after image reconstruction not only increases reconstruction time, but also requires a gated or blurred...
Accurate estimation of cardiac motion from clinical medical images especially motion components parallel to edges has been found to be difficult using the intensity based optical flow algorithm without any prior information. This research aims to develop a new feature guided cardiac motion estimation method for gated myocardial perfusion (MP) PET images whose quality has greatly improved in recent...
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