دورية أكاديمية
Calibration system correction factor for measuring the reference air kerma rate (RAKR) applied to high dose rate 192 Ir sources (HDR).
| العنوان: | Calibration system correction factor for measuring the reference air kerma rate (RAKR) applied to high dose rate 192 Ir sources (HDR). |
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| المؤلفون: | da Silva DB; Nuclear Engineering Program, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.; Department of Radiological Sciences, Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil., da Silva AX; Nuclear Engineering Program, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil., Alves CFE; Department of Radiological Sciences, Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil., Magalhaes LAG; Department of Radiological Sciences, Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil. |
| المصدر: | Biomedical physics & engineering express [Biomed Phys Eng Express] 2024 Apr 23; Vol. 10 (3). Date of Electronic Publication: 2024 Apr 23. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: IOP Publishing Ltd Country of Publication: England NLM ID: 101675002 Publication Model: Electronic Cited Medium: Internet ISSN: 2057-1976 (Electronic) Linking ISSN: 20571976 NLM ISO Abbreviation: Biomed Phys Eng Express Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Bristol : IOP Publishing Ltd., [2015]- |
| مواضيع طبية MeSH: | Computer Simulation* , Radiometry*/methods , Iridium Radioisotopes*/therapeutic use, Calibration ; Humans ; Air ; Aluminum ; Monte Carlo Method ; Radiation Dosage ; Brachytherapy/methods ; Brachytherapy/standards ; Radiotherapy Dosage ; Scattering, Radiation |
| مستخلص: | The aim of this study was to use computer simulation to analyze the impact of the aluminum fixing support on the Reference Air Kerma (RAK), a physical quantity obtained in a calibration system that was experimentally developed in the Laboratory of Radiological Sciences of the University of the State of Rio de Janeiro (LCR-UERJ). Correction factors due to scattered radiation and the geometry of the 192 Ir sources were also sought to be determined. The computational simulation was validated by comparing some parameters of the experimental results with the computational results. These parameters were: verification of the inverse square law of distance, determination of (RAKR), analysis of the source spectrum with and without encapsulation, and the sensitivity curve of the Sourcecheck 4PI ionization chamber response, as a function of the distance from the source along the axial axis, using the microSelectron-v2 (mSv2) and GammaMedplus (GMp) sources. Kerma was determined by activity in the Reference air, with calculated values of 1.725 × 10 -3 U. Bq -1 and 1.710 × 10 -3 U. Bq -1 for the ionization chamber NE 2571 and TN 30001, respectively. The expanded uncertainty for these values was 0.932% and 0.919%, respectively, for a coverage factor (k = 2). The correction factor due to the influence of the aluminum fixing support for measurements at 1 cm and 10 cm from the source was 0.978 and 0.969, respectively. The geometric correction factor of the sources was k (© 2024 IOP Publishing Ltd.) |
| فهرسة مساهمة: | Keywords: computer simulation; correction factors; expanded uncertainty; kerma rate |
| المشرفين على المادة: | 0 (Iridium Radioisotopes) CPD4NFA903 (Aluminum) |
| تواريخ الأحداث: | Date Created: 20240320 Date Completed: 20240423 Latest Revision: 20240423 |
| رمز التحديث: | 20240424 |
| DOI: | 10.1088/2057-1976/ad35cd |
| PMID: | 38507785 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 2057-1976 |
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| DOI: | 10.1088/2057-1976/ad35cd |