Abstract：
:New in vivo dosimetry methods would be useful for clinical HDR brachytherapy. An implantable MOSFET Dose Verification System designed by Sicel Technologies, Inc. was examined for use with 192Ir HDR applications. This investigation demonstrated that varying the dose rate from 22 to 84 cGy/min did not change detector response. The detectors exhibited a higher sensitivity to 192Ir energies than 60Co energies. A nonlinear accumulated dose effect was characterized by three third-order polynomials fit to data from detectors placed at three different distances from the source. The detectors were found to have minimal rotational angular dependence. A strong longitudinal angular dependence was found when the detector's copper coil and electronics assembly were aligned between the MOSFETs and incident radiation. This orientation showed a 16% decrease in response relative to other orientations tested.
journal_name
Med Physjournal_title
Medical physicsauthors
Fagerstrom JM,Micka JA,DeWerd LAdoi
10.1118/1.3013574subject
Has Abstractpub_date
2008-12-01 00:00:00pages
5729-37issue
12eissn
0094-2405issn
2473-4209journal_volume
35pub_type
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