An process of Slice matching for Comparative Reading for Lung Cancer mass screening using Three dimensional CT Image

摘要

Lung cancer is the most cause of cancer death in Japan. Therefore, It has a hope for lung cancer mass screening using CT image to reduce the death rate. The mass screening compares an old image with a new image of the same patient, and the lung cancer earlier stage is diagnosed by retrospect observation. The problem of this screening is reading a lot of images and preparing for comparative reading. To overcome this problem, we have developed an algorithm of slice matching for comparative reading for lung cancer mass screening using three-dimensional CT image. This algorithm investigates the temporal change of chest internal-organs by visual observation, and it compares the slice-matching using blood vessel information to the slice-matching using chest internal-organs information. The slice-matching algorithm is built from these results.