REFERENCE SUBJECT FOR X-RAY CT APPARATUS AND MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a special purpose phantom for quantitatively evaluating a partial volume artifact. SOLUTION: The reference subject evaluates the partial volume artifact of a tomographic image reconstituted by an X-ray CT apparatus. The reference subject is provided in a container in which water is fully filled so as to dispose one end faces of a plurality of members formed of substances in which X-ray absorption coefficients are substantially equal to each other, at a predetermined interval in a predetermined plane.