title: The application of CaSO4:Dy (TLD-900) to diagnostic x-ray exposures.
abstract: The properties of a new commercial thermoluminescent dosimeter, CaSO4: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 X 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.
mesh_terms: D002133:Calcium Sulfate; D004419:Dysprosium; D005459:Fluorides; D008094:Lithium; D018020:Lithium Compounds; D011859:Radiography / Q000379:methods*; D013819:Thermoluminescent Dosimetry / Q000379:methods*
chemical_list: D018020:Lithium Compounds; C027651:lithium fluoride; D004419:Dysprosium; D008094:Lithium; D005459:Fluorides; D002133:Calcium Sulfate