Patent ID: 7668290

Claim:
An X-ray diagnostic system comprising: a display unit configured to display images of a plurality of frames collected at a predetermined frame rate about an object; a selection unit configured to select an image of a particular frame from the images of the frames displayed on the display unit; a calculation unit configured to calculate a delay time for a three-dimensional imaging to the particular frame selected by the selection unit based on the frame rate; and an imaging execution unit configured to execute imaging based on the delay time calculated by the calculation unit, wherein the calculation unit calculates the delay time T 1 for the three-dimensional imaging according to the following equation, by using a contrast imaging start timing (n s /R) based on an n s -th (n s =1, 2, 3, . . . ) frame as the particular frame and the predetermined frame rate R, and a delay time T 0 employed when the images have been collected, T 1 =T 0 +n s /R.