| 摘要 |
FIELD: medicine. ^ SUBSTANCE: invention relates to medical equipment, namely to devices and methods of computer tomography. Tomographic apparatus includes, at least, two X-ray sources which are put in action simultaneously by means of different communication patterns for formation of unambiguously coded irradiation, at least, two detectors, each of which detects initial irradiation, emitted by corresponding to it one of X-ray sources, and irradiation of side dispersion from the remaining two X-ray sources. Each of detectors generates composite signal. After that, decoupler basing on different commutation patterns recognizes signal, corresponding to at least one of X-ray sources, within composite signal and correlates identified signal with corresponding to it X-ray source. In method of image reconstruction tomographic apparatus for formation of object image within visualisation area is used. In the second version of implementation tomographic apparatus contains means for simultaneous generation of groups of unambiguously codes X-ray beams, means for detection of initial irradiation, emitted first beam of coded X-ray beams, means for detection of side dispersion from second beam of coded X-ray beams. Means for detecting initial irradiation and means for detecting irradiation of side dispersion are made with possibility of generation of composite signal, which includes components, characteristic of detected initial irradiation and irradiation of side dispersion. Means for identification of initial irradiation source is based on composite signal. ^ EFFECT: application of invention makes it possible to increase time resolution of obtained images and reduce rotation rate gantry. ^ 29 cl, 8 dwg |
