| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a tomographic image of a focused area with reduced level fluctuations of a CT value and reduced heterogeneity. <P>SOLUTION: The CT device has an image composition part 9g for creating a composite tomographic image of the focused area by compositing a first tomographic image and a second tomographic image, after setting photographing magnification by changing a distance between an X-ray tube 1 and an axis of rotation RA; inputting first scan data which are obtained by a first scan performed on an object 5 with first photographing magnification and second scan data which are obtained by a second scan performed on the focused area of the object 5 with second photographing magnification which is larger than the first photographing magnification; and controlling a reconstruction part 9f to create, from the first scan data, the first tomographic image of the focused area with predetermined matrix numbers on which a low-pass processing is performed, and to create, from the second scan data, the second tomographic image of the focused area with the predetermined matrix numbers on which a high-pass processing is performed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
