Title:
【発明の名称】SPECT装置及びSPECT画像の再構成方法
Document Type and Number:
Japanese Patent JP3352215
Kind Code:
B2
Abstract:
PURPOSE:To improve image resolution by convoluting projected data with a plurality of convolution functions and reversely projecting in a reconstitution region. CONSTITUTION:A frame 1 allows a gamma camera 6 fixed with a fanbeam collimator 5 to rotate around an inspected body P for 360 degrees to detect gammaray emitted from radioactives distributed in the inspected body P from all directions. The projected image data obtained from the camera 6 are collected in a data acquisition part 2. The projection image data are filter-processed at first in the data acquisition part 2. This filter processing is separated into two individual processes. Then, the two data convoluted with individual convolution functions are reversely projected at reconstitution part 3 respectively and by adding those reversely projected data to each other, reconstituted images can be obtained. By this, an exact image with high resolution can be obtained.
Inventors:
Nobuatsu Motomura
Takashi Ichihara
Takashi Ichihara
Application Number:
JP5075094A
Publication Date:
December 03, 2002
Filing Date:
March 22, 1994
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G01T1/161; G06T1/00; (IPC1-7): G01T1/161; G06T1/00
Domestic Patent References:
| JP4370784A | ||||
| JP3225292A | ||||
| JP4120492A | ||||
| JP63172983A | ||||
| JP5769268A |
Attorney, Agent or Firm:
Hideaki Togawa