| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image formation method which can improve the quality of picture. <P>SOLUTION: A subject is scanned with a beam bundle emitted from at least one focus combined with a planar-structured detector array in which a number of detector elements are arranged to be distributed for the detection of the beams of the beam bundle. To achieve this, at least one of the focuses is rotated relatively to the subject together with the detector array which rotates around the subject facing it on at least one focal track. Then, the output data indicating the varidity of the beam when the detector elements of the detector array permeate the subject is supplied and undergoes a filter processing. The data thus processed further undergoes a reverse projection three-dimensionally to generate at least one tomographic image of the slices of the subject with a slicing thickness. The tomographic image represents an absorption value obtained from the output data in the voxels belonging to the slices of the subject under the the radiation of the beam bundle and in the reverse projection, the beams are weighted being related to the positions of the beams in the beam bundle. <P>COPYRIGHT: (C)2004,JPO</p> |
