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:
Nov. 19, 2019
Filed:
Apr. 13, 2017
Dalhousie University, Halifax, CA;
Alasdair Syme, Halifax, CA;
Ian Hill, Halifax, CA;
DALHOUSIE UNIVERSITY, Halifax, NS, CA;
Abstract
Radiation dosimeters are disclosed whereby a passive multilayer substrate is provided to confer tissue equivalence. In an example embodiment, a multilayer substrate is formed over a semiconductor-based radiation sensing layer, where the multilayer substrate includes at least one low-atomic-number layer of having an effective atomic number that is smaller than that of water, and at least one high-atomic-number layer having an effective atomic number that is greater than that of water. The low-atomic-number layers and high-atomic-number layers are provided with respective thicknesses and compositions for modulating the dependence of the signal produced by the radiation dosimeter on photon energy, such that the signal, when calibrated to provide a measure of dose, exhibits approximate tissue-equivalence over a prescribed photon energy range. The multilayer substrate may be configured such that tissue equivalence is provided over an energy range including diagnostic and therapeutic energy ranges, spanning, for example, 20 keV to 5 MeV.