CT (COMPUTED TOMOGRAPHY) DEVICE, AND METHOD OF CALIBRATING THE SAME

PROBLEM TO BE SOLVED: To acquire a cross-sectional image of high dimensional accuracy without performing calibration whenever the photographing magnification is altered. SOLUTION: This CT device includes a shifting mechanism (photographing distance setting means and detection distance setting means) 7 for setting photographing distance FCD and detection distance FDD, and a calibration calculating means for determining the errors of the FCD and FDD and calibrating them based on the size on the first cross-sectional image of a first reference body of the known size obtained by setting a first photographing distance FCD and performing scan and the size on the cross-sectional image of the first reference body obtained by setting a second photographing distance FCD and performing scan. COPYRIGHT: (C)2010,JPO&INPIT