FIELD: computer tomography, medical diagnostics, monitoring of industrial objects. SUBSTANCE: process provides for scanning of object by conical radiation beam with movement of radiation source along some trajectory, foe recording of radiation passed through object by means of screen-converter and for reconstruction of three-dimensional image by projection data. For reconstruction of object in each point there are used projection data of not entire trajectory but of its minimal section meeting condition of completeness for given point. EFFECT: expanded application field, improved functional efficiency of process.
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