The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2006
Filed:
May. 23, 2001
Eiichi Tanaka, Hamamatsu, JP;
Takaji Yamashita, Hamamatsu, JP;
Eiichi Tanaka, Hamamatsu, JP;
Takaji Yamashita, Hamamatsu, JP;
Hamamatsu Photonics K.K., Shizuoka, JP;
Abstract
A PET apparatus is provided, which ensures excellent quantitativeness by properly correcting the influence of scattered radiation while improving the resolution of a reconstructed image and keeping good photon pair detection sensitivity. A determining sectiondetermines whether a straight line connecting the light-receiving surfacesof a pair of photon detectorswhich have simultaneously detected a photon pair crosses any one of slice collimators. When it is determined that the straight line crosses none of the slice collimators, the corresponding coincidence counting information is accumulated by a first coincidence counting information storage sectionto generate a signal sinogram. When it is determined that the straight line crosses one of the slice collimators, the corresponding coincidence counting information is accumulated by a second coincidence counting information storage sectionto generate a scatter sinogram. An image reconstructing sectioncorrects the influence of scattered components on the signal sinogram on the basis of the scattered sinogram, and reconstructs an image on the basis of the corrected signal sinogram.