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Microdosimetric TLD measurements for tumor associated antibody therapy

Conference · · J. Nucl. Med.; (United States)
OSTI ID:6403462
Currently, radiation dose in experimental tumored animals undergoing radioimmunotherapy trials is computed indirectly by assessing serial time-dependent biodistribution data, mean residence times and cumulated activities. These data are then used to calculate organ doses through the standard MIRD formalism. Substantial uncertainty in the absorbed organ doses are a result of model dependent assumptions regarding geometrical and radiation attenuation factors for heterogeneous tissue equivalent medium. The authors have developed a method for the direct verification of absorbed radiation dose through the use of teflon-imbedded, Teledyne CaSO/sub 4/:Dy thermoluminescent dosimeters (TLD) which have been modified to fit inside a 20 gauge needle. Typical TLD dimensions are in a rod-shape configuration of 0.2 x 0.5 x 5mm.
Research Organization:
George Washington Univ., Washington, DC
OSTI ID:
6403462
Report Number(s):
CONF-840619-
Conference Information:
Journal Name: J. Nucl. Med.; (United States) Journal Volume: 25:5
Country of Publication:
United States
Language:
English