| 摘要 |
PROBLEM TO BE SOLVED: To examine radiographically any cardiac cycle of a patient with short imaging time and relatively quick image reconstruction. SOLUTION: Rotating time of X-ray beam flux is regulated so as to become longer or shorter than Lime Z of cycle for cardiac rhythm of a patient by predetermined measurement intervalΔM, depending on the rotation time after one rotation, a phase shift is generated by 360 deg. between the X-ray beam flux and the cardiac rhythm, trigger signal containing trigger pulse T synchronized with the cardiac rhythm is generated, control signal with a time lag with respect to the trigger pulse T is emitted, each measurement data of each profile view of various cardiac cycles are detected and stored during each rotation of the X-ray beam flux, the measurement data detected and stored at various angle positions are integrated during plural rotations, each image is reconstructed per cardiac cycle from the measurement data of each profile view group P1 (α), P2 (α) of a partial rotation or one whole rotation by using the trigger signal, each control signal for this trigger signal and the measurement interval.
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