Active Shape Using the brightness distribution and gradient information from the MRI model-based automatic segmentation of prostate imaging apparatus and method

摘要

the present invention include the prostate-recorded magnetic resonance (Magnetic Resonance, MR) imaging in prostate area to provide a technique for dividing. Prostate area is not easily separated by analogy with the configuration of the surrounding tissue area. The present invention is then selected for the brightness value profile is adaptively in order to solve this problem and create a statistical shape model based on a multi-resolution approach to extract the prostate surface using the active shape model. In addition, the geometry information is used to get rid of the hole (hole) on the image caused by a local optimization of the extraction process using the prostate surface active shape model (local optima). In addition, the present invention is anatomically correct for the large variation in the surface shape using the two-dimensional slope information, and by using a smoothing technique to express a smooth surface shape.