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:
Oct. 10, 2000
Filed:
Feb. 20, 1998
Applicant:
Inventor:
Frank P DiFilippo, University Heights, OH (US);
Assignee:
Picker International, Inc., Highland Heights, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01T / ;
U.S. Cl.
CPC ...
25036303 ; 2503631 ;
Abstract
A camera for use in coincidence imaging includes detector heads (10a, 10b) disposed about an examination region (12). The detector heads (10a, 10b) include septa (36) for absorbing radiation having a relatively large axial angle. The septa, however, cause the sensitivity of the detectors (10a, 10b) to vary as a function of axial position along their face. The relative positions of the detectors (10a, 10b) and the patient are varied so as to reduce septal artifacts. In particular, artifacts arising from second and fourth harmonics may be reduced.