Patent ID: 6946659

Claim:
An apparatus for forming a radiation source distribution image for detecting radiation radiated from a radiation source in an examinee to form a distribution image of said radiation source in said examinee, said apparatus comprising: a line sensor including a plurality of radiation-detecting elements for detecting said radiation, said plurality of radiation-detecting elements being arranged one dimensionally; a coded aperture plate arranged between said line sensor and said examinee, including a plurality of apertures arranged one dimensionally according to a predetermined array rule in a same direction as said radiation-detecting elements; a movable means for moving said line sensor and said coded aperture plate in unison in a direction perpendicular to the direction in which said radiation-detecting elements and said apertures are arranged; an image-forming means for forming said distribution image of said radiation source based on said radiation detected by said radiation-detecting elements; and a display means for displaying said distribution image of said radiation source formed by said image-forming means.