The purpose of the present invention is to provide a tomographic image reading system and a tomographic image reading method, the tomographic image reading system in which total processed data and storage capacity of a tomographic image are decreased, a lesion site of a patient is quickly and easily read by extracting an image differential value from a series of tomographic images, and read data and storage capacity of the tomographic image are decreased and reading speed is increased by setting a reading exemption range, thereby enhancing overall tomographic image reading efficiency. In order to attain said purpose, the present invention provides a tomographic image reading system for reading an image obtained by means of tomography, the system comprising: a tomographic image reception/storage unit for storing a tomographic image a pixel differential image generation unit for extracting, from the tomographic image that is stored in the tomographic image reception/storage unit, a pixel differential image which has a pixel differential value with respect to a time-series image and generating same and a reading display unit for emphasizing and displaying the pixel differential on a series of tomographic images being displayed on the basis of the pixel differential value of n images that has been received from the pixel differential image generation unit.La présente invention vise à fournir un système de lecture dimages tomographiques et un procédé de lecture dimages tomographiques, le système de lecture dimages tomographiques dans lequel les données totales traitées et la capacité de stockage dimages tomographiques sont diminuées, un site de lésion dun patient est rapidement et facilement lu par extraction dune valeur de différence dimage provenant dune série dimages tomographiques, et les données lues et la capacité de stockage des images tomographiques sont diminuées, et la vitesse de lecture est augmentée par réglage dune gamme dexemptions de lectures, ce qui renfo
