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The application of CaSO 4 :Dy (TLD‐900) to diagnostic x‐ray exposures
Author(s) -
NiroomandRad Azam,
DeWerd Larry A.
Publication year - 1983
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.595337
Subject(s) - thermoluminescent dosimeter , x ray , nuclear medicine , medical physics , dosimetry , materials science , medicine , optics , physics , dosimeter
The properties of a new commercial thermoluminescent dosimeter, CaSO 4 :Dy without a LiF binder (TLD‐900) was studied for low‐exposure measurements in diagnostic radiology. The former TLD‐900 had a LiF binder (herein referred to as “TLD‐900/LiF”). The principle features of this dosimeter are its high sensitivity to low‐energy radiation and its relatively low fading which permits measurements down to less than 2.6×10 − 8 C kg (0.1 mR) with an accuracy better than 20%. The characteristics, annealing procedures, light sensitivity, energy response, reproducibility, and fading, of TLD‐900 are discussed and compared with TLD‐900/LiF. When the precautions presented in this paper are used, the dosimeters can be used for the measurement of x‐ray exposures.