| 摘要 |
<P>PROBLEM TO BE SOLVED: To evaluate a refined orientation in a space for a basic object having a practically cylindrical rotation shape, while reducing irradiation on a patient. <P>SOLUTION: The orientation in a space for the basic object (10) having a practically cylindrical rotation shape is evaluated by: (a) a step to determine an X-ray dose A adsorbed by the basic object on a projection image; and (b) a step to evaluate the sine of an angle θ between a longitudinal axis of the basic object and a face of the projection image as a function of the absorbed X-ray dose A. An object formed of the basic object is reconstructed by (a) a step to determine the length of the basic object S<SB>i</SB>and (b) a step to determine a spatial relative coordinate relating to P<SB>i</SB>out of both ends (P<SB>i-1</SB>and P<SB>i</SB>) of the basic object S<SB>i</SB>on the basis of another end P<SB>i-1</SB>. <P>COPYRIGHT: (C)2011,JPO&INPIT |
