IMAGE-BASED METHOD FOR MEASURING ELASTICITY OF BIOLOGICAL TISSUES AND SYSTEM THEREOF

摘要

An image-based method for measuring elasticity of biological tissues and an image-based system thereof, in which the method includes following steps: obtaining N successive grayscale images of a testing biological tissue, where N is a positive integer (S110); obtaining regions of interest (ROI) of the grayscale images (S120); dividing the regions of interest into a grid of small sections (S130); calculating relative displacement vector of each interrogation window using texture matching method (S140); and calculating elastic modulus of each interrogation window according to the relative displacement vectors (S150). The method can be applied to various resolutions of grayscale images obtaining in ultrasound imaging, optical imaging, photoacoustic imaging, CT imaging, magnetic resonance imaging and the like. The system can be integrated into a traditional clinical imaging system as an image post-processing software module to characterize tissue elasticity. The method enables increasing imaging system function avoiding hardware upgrading of a current clinical imaging system with reduced cost, and is convenient to be clinically popularized.