Dosimetric characteristics of the new RadioCoil{sup TM} {sup 103}Pd wire line source for use in permanent brachytherapy implants
- Department of Radiation Medicine, University of Kentucky Chandler Medical Center, Lexington, Kentucky 40536-0084 (United States)
Recently, a novel linear brachytherapy source in the form of a coiled wire has become available for use in interstitial implants of various treatment sites such as prostate gland. This source type employs a design completely different from that of most 'seed' sources currently on the market, one which improves upon or eliminates several common problems with such sources. Dosimetric characteristics of these sources with active lengths 0.5 cm to 5.0 cm were determined for clinical application. For 0.5 cm and 1.0 cm active length sources, the dose rate constant, radial dose function, and two-dimensional (2D) anisotropy function were experimentally and theoretically determined following the updated AAPM Task Group 43 (TG-43U1) recommendations. Radial dose functions and/or 'along-away' matrix functions were also obtained for sources with active lengths 2.0 cm to 5.0 cm. Measurements were performed with LiF thermoluminescent dosimeters in Solid Water{sup TM} phantoms. Measured data was compared to Monte Carlo simulated data in Solid Water{sup TM} utilizing the PTRAN code, version 7.43. After finding the data to be in agreement, Monte Carlo calculations were performed in liquid water to obtain clinically applicable dosimetric data as per TG-43U1 recommendations. The results indicated the dose rate constant of the 0.5 cm long RadioCoil{sup TM103}Pd source in Solid Water{sup TM} to be 0.641 cGy h{sup -1} U{sup -1} when measured, and 0.636 cGy h{sup -1} U{sup -1} when simulated by Monte Carlo. The calculated dose rate constant in liquid water was found to be 0.650 cGy h{sup -1} U{sup -1}. These values are comparable to other commercially available sources. Complete dosimetric data and simulation results are described in this paper. Per TG-43U1, clinical treatment planning systems should utilize the values reported for liquid water.
- OSTI ID:
- 20634432
- Journal Information:
- Medical Physics, Journal Name: Medical Physics Journal Issue: 11 Vol. 31; ISSN 0094-2405; ISSN MPHYA6
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dosimetric characterization of model Cs-1 Rev2 cesium-131 brachytherapy source in water phantoms and human tissues with MCNP5 Monte Carlo simulation
EchoSeed Model 6733 Iodine-125 brachytherapy source: Improved dosimetric characterization using the MCNP5 Monte Carlo code
Monte Carlo and thermoluminescence dosimetry of the new IsoSeed registered model I25.S17 {sup 125}I interstitial brachytherapy seed
Journal Article
·
Tue Apr 15 00:00:00 EDT 2008
· Medical Physics
·
OSTI ID:21120656
EchoSeed Model 6733 Iodine-125 brachytherapy source: Improved dosimetric characterization using the MCNP5 Monte Carlo code
Journal Article
·
Wed Aug 15 00:00:00 EDT 2012
· Medical Physics
·
OSTI ID:22098937
Monte Carlo and thermoluminescence dosimetry of the new IsoSeed registered model I25.S17 {sup 125}I interstitial brachytherapy seed
Journal Article
·
Mon Nov 14 23:00:00 EST 2005
· Medical Physics
·
OSTI ID:20726892