DETECTING MULTI-TUBE ROENTGEN IRRADIATION Russian patent published in 2012 - IPC A61B6/03 

FIELD: medicine.

SUBSTANCE: invention relates to medical systems of image formation. System of computed tomography contains first and second roentgen tubes, located in different places on z axis with approximately the same angular position around examined area, which during first axial scanning alternately emit irradiation beams. In realisation of the method the first and second roentgen tubes emit the first and second irradiation beams, whose external projections cross the plane perpendicular to the rotation axis, and determine the width of reconstruction volume. The second external projection of the first beam and the second external projection of the second beam cross the ways, crossing in the centre of the perimetre of the volume of reconstruction on the side of the examined area proximal to roentgen tubes. Common detector detects irradiation and forms data, representing it for device of volume reconstruction. In the second version of system implementation there are at least two detectors, one of the detectors detecting irradiation from the first source, the other detector, detecting irradiation from the second source of irradiation. In the system of stereo-tube computed tomography there are two sources, located in different places on z axis with approximately the same angular position around the examined area. Sources of the first external projection follow the contour of the irradiated object. Method of stereo-tube computed tomography contains stages, at which the first external projection of the first beam of the first roentgen tube is configured, the first external projection of the second beam of the second roentgen tube is configured, the second external projection of the first beam and the second external projection of the second beam cross the ways, crossing approximately in the cetre of the perimetre of the volume on the side of the examined area, proximal to roentgen tubes, and angle of beams are configured with possibility to locate beams in such a way as irradiate length of the area on z axis during axial scanning.

EFFECT: application of the invention makes it possible to improve application of irradiation dose.

23 cl, 10 dwg