Patent ID: 6316782
Filing Date: 2001-11-13
Classification: G01T

Abstract:
A method of radiation field imaging for determining a spatial dose distribution in a luminescent detector, wherein said luminescent detector consists of at least a layer of luminescent material, and wherein said luminescent material is capable of storing an absorbed radiation dose image, comprising:(a) irradiating said luminescent detector through an absorbing filter, thereby creating a stored dose pattern within said luminescent material,(a1) said absorbing filter having higher radiation absorption regions and lower radiation absorption regions, and,(a2) said higher and lower radiation absorption regions together forming a spatially periodic pattern;(b) inducing at least one luminescence emission from said luminescent material, said at least one luminescence emission being representative of said stored dose pattern; and,(c) analyzing at least one of said at least one luminescence emissions to determine an estimate of said spatial dose distribution.