| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a CT apparatus capable of acquiring a cross-sectional image of a subject having a layer structure. <P>SOLUTION: This CT apparatus for acquiring the cross-sectional image of a subject 5 having a layer structure includes: a scan control unit 9c which performs a first scan for controlling rotating/lifting mechanism 7 and an X-ray detector 3 to rotate a subject in a first angle range, and incorporating and storing, as first scan data, a plurality of transmission images detected for every first angle interval, and a second scan for rotating the subject in a second angle range, and incorporating and storing, as second scan data, a plurality of transmission images detected for every second angle interval, which is smaller than the first angle interval; an angle range setting unit 9d which sets, based on the first scan data, the second angle range where the layer surface is within ±60° from the rotating position which becomes parallel to the radiation optical axis L and includes the rotating position to be parallel; and a reconstruction unit 9e which reconstructs the cross-sectional image which is parallel to the tomographic imaging surface of the subject using at least the second scan data. <P>COPYRIGHT: (C)2012,JPO&INPIT |
