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. 25, 1988
Filed:
Apr. 30, 1987
Applicant:
Inventor:
Hans Sundqvist, Vikingstad, SE;
Assignee:
Elekta Instrument, Geneva, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61N / ;
U.S. Cl.
CPC ...
378 65 ; 2504961 ; 378195 ; 378 68 ; 378-9 ;
Abstract
An arrangement in a gamma unit, comprising a large number of radiation sources (9) mounted within a radiation shield (2) and having beam channels (6, 19) directed radially from said radiation sources toward a common focal point (F), said radiation shield comprising a space adapted to accommodate the head of a patient resting on a support. The novel matter resides in that the radiation sources (9) and the beam channels (6, 19) directed radially therefrom toward the focal point are located, in relation to the diametrical plane through the opening to the space, within a zone extending to latitudes 30.degree.-45.degree., as seen from said diametrical plane.