Schematic diagram of the jigs designed for TLD measurements of the TG43 parameters of a brachytherapy source.
Photographs of brachytherapy source holders showing the source mounted on the tip of a graphite rod. (a) Design for measurement of dose-rate constant and radial dose function . (b) Design for measurement of anisotropy function .
Photographs of jigs constructed to hold a source and graphite rod in the desired position while gluing them for measurements of (a) dose rate constant or radial dose function, or (b) anisotropy function.
Photograph of a simulation jig designed for verifying the axial centering and correct height of a brachytherapy source.
Representative measurements determined in liquid water and SW. The TLD signals are plotted in (a) Cartesian form, and (b) polar form for liquid water, and correspondingly in (c) and (d) for SW. The Cartesian plots report the TLD signal per unit source air-kerma strength per unit time as a function of angle around the source equator. The radial axes of the polar plots have the units TLD signal per unit source air-kerma strength per unit time.
Measured values of the correction factor for a SW phantom. The measured values are compared with a published value determined by Monte Carlo calculation for a similar source model and a line-source configuration. “SD” represents the standard deviation of the mean.
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