Method of segmenting lesions in images

The boundary detecting method of tumor imaging is described in accordance with the present invention. Boundary detecting method of the masses according to the present invention includes the steps of acquiring an image of a region of interest in the image, a contrast ratio adjustment step of so contrast is different adjusted to the image of the obtained region of interest to the distance from the center point of the region of interest, the contrast ratio noise reduction to remove noise with respect to the adjusted imaging step, and is configured to include a region separating step of separating the regions of the mass from the image to remove the noise, the contrast ratio adjustment step is, the more far away quality of from the center point of the region of interest by giving to adjust the image to increase the contrast ratio, while maintaining the shape of the original mass haejueo able to detect a tumor interface allows the inner boundary of the tumor mass to find reliable, even if they are not uniform.