FIELD: medicine.
SUBSTANCE: invention relates to medical equipment, namely to devices for computed tomographic angiography with compensation of respiratory motion. Method consists in spiral scanning of patient by rotation of conic irradiation beam around patient and movement in longitudinal direction of patient and conic beam with respect to each other. During spiral scanning source of irradiation and detector create a set of patient's subvolumes, from which selection of subvolumes, which are in general phase of cardiac cycle. Characteristic points in overlapping parts of subvolume images in general phase of cardiac cycle are identified and used to calculate vector of respiratory motion for some of selected subvolumes. Sets of said subvolumes, corresponding to selected phase of cardiac cycle, are reconstructed into a set of subvolume images. Versions of computer tomographic device implementation include support for patient, rotating gantry, source of X-ray irradiation, installed on it, detector, on support for patient, mechanism, providing spiral scanning, and one or several processors with computer-readable carrier.
EFFECT: application of the invention makes it possible to carry out computed tomographic angiography of heart on people, who cannot hold their breath, and form the image taking into account respiratory motion.
16 cl, 3 dwg
