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| Research article summary (published 29 Apr 2003): |
Theoretical and experimental determination of dosimetric characteristics for brachyseed Pd-103, model Pd-1, source.
Full Abstract
Dosimetric characteristics of the BrachySeed Pd-103, Model Pd-1 source have been determined using both theoretical and experimental methods. Dose rate constant, radial dose function, and anisotropy functions of the source have been obtained following the TG-43 recommendations. Derivation of the dose rate constant was based on recent NIST WAFAC calibration performed in accordance with their 1999 Standard. Measurements were performed in Solid Water using LiF TLD chips. Theoretical simulation calculations were performed in both Solid Water and water phantom materials using MCNP4C2 Monte Carlo code using DLC-200 interaction data. The results of the Monte Carlo simulation indicated a dose rate constant of 0.65 cGyh(-1)U(-1) and 0.61 cGyh (-1)U(-1) in water and Solid Water, respectively. The measured dose rate constant in Solid Water was found to be 0.63+/-7% cGyh (-1)U(-1), which is within the experimental uncertainty of the Monte-Carlo simulated results. The anisotropy functions of the source were calculated in both water and in Solid Water at the radial distances of 1 to 7 cm. Measurements were made in Solid Water at distances of 2, 3, 5, and 7 cm. The Monte-Carlo calculated anisotropy constant of the new source was found to be 0.98 in water. The tabulated data and 5th order polynomial fit coefficients for the radial dose function along with the dose rate constant and anisotropy functions are provided to support clinical use of this source.
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Author information
Author/s: Meigooni, Ali S (AS); Zhang, Hualin (H); Perry, Candace (C); Dini, Sharifeh A (SA); Koona, Rafiq A (RA);
Affiliation: Department of Radiation Medicine, Chandler Medical Center, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA. alimieg(-atsign-)pop.uky.edu
Journal and publication information
Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't
Journal: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine (Appl Radiat Isot), published in England. (Language: eng)
Reference: 2003-May; vol 58 (issue 5) : pp 533-41
Dates: Created 2003/05/08; Completed 2003/07/29; Revised 2006/11/15;
PMID: 12735969, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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