IMAGING MEDICAL EXAMINATION APPARATUS TO SHOOT IMAGE OF OBJECT MOVING PERIODICALLY AND METHOD TO OBTAIN THREE DIMENSIONAL MEASURED DATA OF OBJECT MOVING PERIODICALLY

摘要

PROBLEM TO BE SOLVED: To provide an imaging medical examination apparatus and method which expands the coverage of the reconstruction of a picture in connection with the examination of a movable object to be examined by a CT scanner or C arm apparatus.;SOLUTION: A lot of rotary movement (Rm, n= 1, 2, ∼M) which covers the same angular range (α_max) of a base (7) which supports an X-ray source (2) and a detector (5) respectively is produced, and a measured data set is generated respectively during a lot of measuring intervals (Dnm, n=1∼N, m=1∼M) in a method to obtain three dimensional measured data of an object to be examined moving periodically by cycle time (T_RR ). A turnover period (T_rot) of rotating is set so that a lot of phase intervals of periodic movements to scan by a measuring interval (D_nm) arise in each rotary movement (Rm). A synchronizing signal derived from periodic movement of the object to be examined is used for scanning the same phase intervals of periodic movements respectively at the measuring interval (D_nm).;COPYRIGHT: (C)2004,JPO