Patent ID: 8909321

Claim:
A diagnostic imaging apparatus, comprising: a controller configured to obtain, from a first preparatory scan, images of a heart in each of a plurality of time phases, and cause additional cardiac imaging to be performed after the first preparatory scan, measure sequential variations in a size of a ventricle within at least one heart beat, from the obtained images of the heart, specify a time phase of little cardiac motion based on variations in the size of the ventricle, set scanning conditions based on the specified time phase, detect a period during which a volume variation indicating change in the size of the ventricle falls below a threshold value, and specify the detected period as the time phase of little cardiac motion, and set the scanning conditions based only on the images obtained from the first preparatory scan; and an imaging unit that performs one of coronary angiography and non-contrast angiography based on the set scanning conditions, wherein the controller is configured to cause only the first preparatory scan to be performed, without causing other preparatory scans for specifying the time phase to be performed.