METHOD AND DEVICE FOR THREE-DIMENSIONAL COMPUTED TOMOGRAPHIC IMAGING CONCERNED REGION OF SUBJECT

摘要

PROBLEM TO BE SOLVED: To perform a precisely image reconfiguration without remarkably loosing the preciseness of image reconfiguration by combining each two-dimensional data set with a two-dimensional correction data by the weighting three- dimensional reverse projection method to three-dimensional space to reconfigure the three-dimensional image of the concerned area within a subject. SOLUTION: In response to the control signal from a properly programmed computer 206, conical or pyramidal beam of energy such as X-ray is cooperated with a two-dimensionally imaged detector array 212 in a plurality of mutually adjacent beam source positions discretely and successively formed along predetermined beam source scanning routes by a computer control manipulator 208. Accordingly, the X-ray energy penetrates the view field of an image forming device, is attenuated by a subject 216, and reaches the picture element in the detector 212 to form the set of the projection data corresponding to the detected X-ray energy.