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:
Feb. 28, 1989
Filed:
Apr. 08, 1986
Chun B Lim, Solon, OH (US);
Richard Chaney, Cuyahoga Falls, OH (US);
Felix Jih, Cleveland, OH (US);
Tim Johnson, Cleveland, OH (US);
Steven E King, Springfield, VA (US);
Technicare Corporation, Solon, OH (US);
Abstract
In scintillation cameras, spatial or linearity correction is accomplished utilizing a weighted average of correction vectors in the region of the apparent location of scintillation events. Such vectors are developed in a calibration step using a pinhole or slot apertured mask. On the fly, vectors beyond those next adjacent the apparent location are used for correction, which are constrained to exhibit continuity in both the functional value, and at a minimum the first derivative, but which may include continuity in higher order derivatives also. One such correction function, which insures continuity in both the functional value and its first derivative, is called a Hermite interpolation function.