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Nurman Rajagukguk
Laboratorium Dosimetri Standar Sekunder Secondary Standard Dosimetry Laboratory Pusat Teknologi Keselamatan dan Metrologi Radiasi Center for Safety Technology and Radiation Metrology Badan Tenaga Nuklir Nasional National Nuclear Energy Agency Jakarta
Physics

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Evaluation of Well-Type Chamber Calibration Factor for Measurement of Ir-192 Brachytherapy Source Over 10 Institutions Assef Firnando Firmansyah; Okky Agassy Firmansyah; Sri Inang Sunaryati; Nurman Rajagukguk
Jurnal Fisika dan Aplikasinya Vol 16, No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v16i2.6406

Abstract

This paper describes about the evaluation of well-type chamber calibration factor for measurement Ir-192 brachytherapy source. Data were collected at ten institutions that have modalities of Ir-192 brachytherapy. The well-type chamber measures the Ir-192 brachytherapy sources in terms of air kerma strength. Calibration was carried out using the substitution method which adopted from a protocol published by the International Atomic Energy Agency. The well-type chamber standard used was HDR-1000 Plus. The results obtained that NAKS for well-type chamber from PTW manufacturers have a range of values from 9.063 x 105 – 9.875 x 105 Gy m2 h-1 A-1 with an average value 9.522 x 105 Gy m2 h-1 A-1, while the well-type chamber from Standard Imaging manufacturers have a range of values from 4.634 x 105 – 4.662 x 105 Gy m2 h-1 A-1 with an average value 4.648 x 105 Gy m2 h-1 A-1. The range of deviations obtained between NAKS new and NAKS old ranges from 0.8% to -1.8%, while the range of normalization results of NAKS new to the average value of NAKS new ranges from 0.952 - 1.029. There was one calibration factor that has a deviation of more than 1% over the NAKS old. Based on the calculation of uncertainty, all the calibration factor results obtained were still within the accepted range
Co-Authors Assef Firnando Firmansyah Okky Agassy Firmansyah Sri Inang Sunaryati