G - Physics – 01 – T
Patent
G - Physics
01
T
G01T 1/02 (2006.01) G01T 1/00 (2006.01) G01T 1/08 (2006.01) G06K 7/10 (2006.01)
Patent
CA 2236973
A method for determining a level of exposure to radiation utilizes a radiation dosimeter (10) comprising a substrate (12) provided with a radiation sensitive layer or patch (14) having an optical density which varies in accordance with the degree of radiation exposure. In addition, the substrate is provided with optically readable coding (16a, 16b) which identifies one or more encoded mathematical parameters for enabling an automated calculation of dosage from a detected optical density change of the radiation sensitive material. Each dosimeter is provided with a unique identification code encoded in the bar coding on the dosimeter substrate, to enable memory storage of pre-exposure optical densities for multiple dosimeters.
Un procédé pour déterminer le degré d'exposition à des radiations fait appel à un dosimètre (10) pour radiations, comprenant un substrat (12) à couche ou plaquette (14) sensible aux radiations ayant une densité optique qui varie en fonction du degré d'exposition aux radiations. En plus, le substrat comprend des codes (16a, 16b) lisibles par des procédés optiques, qui identifient un ou plusieurs paramètres mathématiques codés permettant un calcul automatique de la dose à partir du changement mesuré de la densité optique du matériau sensible aux radiations. Chaque dosimètre a un code barres spécial, qui est imprimé sur le substrat du dosimètre et qui donne sa densité optique, avant l'exposition.
Donahue J. Michael
Lewis David F.
Listl Carl A.
Seiwatz Henry
Isp Investments Inc.
Smart & Biggar
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