| 摘要 |
PROBLEM TO BE SOLVED: To collect data within a predetermined cardiac phase range of a heart periodically moving and further to reduce X-ray dosage to a mamma. SOLUTION: When X-ray radiation within an inhibiting angle range from an inhibiting starting angleΘs to an inhibiting finishing angleΘe in the rotational angleθof an X-ray tube 21 is inhibited with the rotational angleθof the X-ray tube 21 not within the inhibiting angle range and when the cardiac phaseΨis a collecting starting cardiac phaseΨs, the collection of projection data using for reconstituting images is started to finish the collection of the projection data before the rotational angleθenters the inhibiting angle range. The data within the predetermined cardiac phase range of the heart moving periodically can be collected and the X-ray dosage of the mamma can be reduced. COPYRIGHT: (C)2009,JPO&INPIT |
