| 摘要 |
The invention relates to a device and a method for producing an image of the heart ( 5 ), in which the image is preferably three-dimensional and is reconstructed from a series of X-ray projection pictures from various projection directions. In this connection, the electrocardiogram ( 7 ) is recorded in parallel with the X-ray pictures and used by a data processing device ( 10 ) to control the picture-taking rate, the X-ray pulse duration, the tube current and/or the tube voltage of the X-ray device ( 1 ) in such a way that, during the phase to be displayed of maximum movement of the heart, the mean X-ray exposure rate is higher than during the other phases. The data processing device ( 10 ) may furthermore use the electrocardiogram to drive an injection pump ( 8 ) for the contrast agent in such a way that an approximately constant contrast display of the vessels is produced with minimum contrast-agent injection despite a variable flowrate in the vascular system.
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