Research ArticleOpen Access

Fitting of Radial Dose Function for 192ir Brachytherapy Sources

Volume 6 - Issue 4

**AV Belousov*¹, UA Bliznyuk², AA Belyanov² and GA Krusanov¹**

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- ¹Physics Department, MV. Lomonosov Moscow State University, Russia
- ²Nuclear research institute named by DV. Skobeltcin, Russia
*Corresponding author: AV Belousov, Physics Department, MV Lomonosov Moscow State University, Moscow, Russia

Received: June 28, 2018; Published: July 09, 2018

DOI: 10.26717/BJSTR.2018.06.001370

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Abstract

This article presents an improved configuration for fitting the radial dose functions of sealed 192Ir brachytherapy sources. The proposed functions allow for precise fitting of radial dose function in the range of 0.5 20 cm. The maximum deviations between fitting data and Monte Carlo modeling data do not exceed 0.6%, while average deviations are in the order of 0.1%. The fitting coefficients for the proposed functions are specified for 11 sources from different manufacturers. The proposed functions could be used in treatment planning systems for more accurate calculation of the dose distributions around the sources using a wide range of data according to TG-43 dosimetry protocol.

Keywords: Brachytherapy; Monte Carlo; Fitting Radial Dose Function

Abbreviations: AAPM: American Association of Physicists in Medicine; TG-43: Task Group 43