DEVICE AND METHOD FOR DETERMINING BOUNDARY OF TARGET REGION OF MEDICAL IMAGE

摘要

A device for determining a boundary of a target region of a medical image is used for distinguishing a boundary of a target region according to physical quantitative characteristics corresponding to and reflected by tissue distribution in a medical image. The device comprises: an interaction unit, through which an operator selects a target region on a medical image; a threshold setting unit, used for determining a threshold of physical quantitative characteristics in the selected target region; and a threshold segmentation unit, used for dividing a to-be-analyzed region or a region of interest into sub-regions, or filling image units (pixels) in the to-be-analyzed region. The to-be-analyzed region comprises the target region, and the sub-regions are sub-regions divided from the image. The threshold segmentation unit compares an average parameter value of the physical quantitative characteristics of the sub-regions with the threshold, and marks each sub-region according to a comparison result. The device and a method thereof have explicit physical significance and employ simple and efficient algorithms, and therefore are suitable for processing special circumstances of various clinical lesion hearts.