A proof-of-concept study of a new detector based on a thin plastic scintillator monitored by a Charge-Coupled Device (CCD) camera designed for monitoring and characterisation of Linac photon beams is presented. The response of the detector is compared with radiochromic film using 6 and 18 MV radiotherapeutic beams. We have observed: (i) all instruments survived the secondary radiation fields during Linac operation, (ii) it was possible to process the measured data using statistical techniques and (iii) the processed data from the CCD camera qualitatively correspond to film dosimetry results. A statistical technique based on the selection of minimal values provides the clearest results. Quantitatively, CCD and film results can only be compared as 6 to 18 MV response rates. We have observed that the rates from the CCD data are systematically higher than the rates from film dosimetry. Differences are not too high, namely 1.9-2.4 times the combined standard deviation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/rpd/ncac100 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Microstrip plastic scintillating detector system for quality assurance in synchrotron microbeam radiotherapy.
Sci Rep
January 2025
Universite Claude Bernard Lyon 1, INL, UMR5270, CNRS, INSA Lyon, Ecole Centrale de Lyon, CPE Lyon, 69622, Villeurbanne, France.
Synchrotron microbeam radiotherapy (MRT), which has entered the clinical transfer phase, requires the development of appropriate quality assurance (QA) tools due to very high dose rates and spatial hyperfractionation. A microstrip plastic scintillating detector system with associated modules was proposed in the context of real-time MRT QA. A prototype of such a system with 105 scintillating microstrips was developed and tested under MRT conditions.
View Article and Find Full Text PDFSolvent-Tuned Plasticity for Various Binder-Free Applications of a New Lead-Free Manganese Halide.
Adv Mater
December 2024
Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea.
The development of efficient color conversion layers for μ-LED technology faces significant challenges owing to the limitations of materials that require binders. Binders are typically used to ensure uniform film formation in color-conversion layers, but they often cause optical losses, increase layer thickness, and introduce long-term stability issues. To address the limitations of materials requiring binders, cyclopropyltriphenylphosphonium manganese tetrabromide (CPTPMnBr) is synthesized, a novel lead-free metal halide.
View Article and Find Full Text PDFAn Optimized SVR Algorithm for Pulse Pile-Up Correction in Pulse Shape Discrimination.
Sensors (Basel)
November 2024
School of Medicine, Chongqing University, Chongqing 400044, China.
Pulse pile-up presents a significant challenge in nuclear radiation measurements, particularly in neutron-gamma pulse shape discrimination, as it causes pulse distortion and diminishes identification accuracy. To address this, we propose an optimized Support Vector Regression (SVR) algorithm for correcting pulse pile-up. Initially, the Dung Beetle Optimizer (DBO) and Whale Optimization Algorithm (WOA) are integrated to refine the correction process, with performance evaluated using charge comparison methods (CCM) for pulse shape discrimination.
View Article and Find Full Text PDFMeasurement of β-nuclides in various solutions using plastic scintillation microspheres.
Anal Chim Acta
January 2025
China Institute for Radiation Protection, Taiyuan, Shanxi, 030006, China; Shanxi Provincial Key Laboratory for Translational Nuclear Medicine and Precision Protection, Taiyuan, Shanxi, 030006, China.
Background: Scintillation cocktails cannot directly measure samples with extreme acidity or alkalinity in β-nuclide liquid scintillation analysis. Plastic scintillation microspheres (PSm), as a novel scintillation material, offer the potential to overcome these limitations by allowing direct mixing with a variety of solutions for measurement, particularly in challenging chemical environments.
Results: This study evaluated the performance of PSm in various chemical environments, including four acids (nitric, hydrochloric, sulfuric, and phosphoric acids), an alkaline solution (NaOH), a high-salinity solution, and methanol.
Transparent crystalline scintillators such as cerium-doped YAG or LuAG are widely used in X-ray imaging for the indirect detection of X-rays. The application of reflective coatings on the front side to improve the optical gain is common practice for flat panel detectors with CsI or GdOS powder scintillators but still largely unknown for crystalline scintillators such as LuAG. This work shows experimentally and quantitatively how a black and reflective coating on the X-ray side of a 2 mm LuAG:Ce scintillator improves the image quality compared to a 2 mm LuAG:Ce scintillator without a coating.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!