Patent ID: 8047993
Filing Date: 2011-11-01
Classification: A61B

Abstract:
1. A method for detecting the degree of malignancy in tumors noninvasively, comprising the steps of: (1) using a Power Doppler ultrasound unit to scan a tumor and capture sequential color images in a complete heartbeat cycle, and choosing an area of interest (AREA_ROI) from the images; (2) labeling pixels reflecting signals of bloodflow in the images during one heartbeat cycle to contour an area of tumor blood vessels (AREA_vessel); (3) calculating a difference of PDVI between maximal systolic pressure and diastolic pressure during the heartbeat cycle to obtain tumor differential vascularity index (TDVI), and the PDVI is a ratio obtained by dividing pixels of AREA_vessel by a total area in the section of AREA_ROI; and (4) determining the degree of malignancy by the TDVI.