Radiation and Environmental Biophysics This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Assessment of stereotactic high-resolution detectors for stereotactic body radiotherapy: comparative analysis between myQA ® SRS and Gafchromic EBT-XD films
Radiat Environ Biophys. 2024 Apr 29. doi: 10.1007/s00411-024-01071-6. Online ahead of print.ABSTRACTThe study aimed to evaluate dosimetry systems used for stereotactic body radiotherapy (SBRT), specifically 2D array dosimetry and film dosimetry systems, for exploring their characteristics and clinical suitability. For this, high-resolution myQA SRS detectors and Gafchromic EBT-XD films were employed. Film analysis included net optical density (OD) values depending on energy, dose rate, scanner orientation, scanning side, and post-exposure growth. For myQA SRS, signal values were evaluated in terms of dose rate (400-1400 MU...
Source: Radiation and Environmental Biophysics - April 29, 2024 Category: Physics Authors: Dinesan Chinnaiya Gopinath Mudhana Source Type: research

Impact of flight route changes on cosmic ray exposure: consequences of the conflict between Ukraine and the Russian federation
Radiat Environ Biophys. 2024 Apr 26. doi: 10.1007/s00411-024-01066-3. Online ahead of print.ABSTRACTThis work investigates the impact on cosmic ray exposures to aircrew due to changing flight routes operated in the context of the recent conflict between Ukraine and the Russian Federation. All analyses were done based on Paris-Tokyo and Tokyo-Paris flights taken as examples, and differences in radiation exposures were quantified by comparing the situation before and after the beginning of the conflict. Regarding space weather scenarios, a quiet solar period and an extreme solar event (ground level enhancement (GLE) 5) were ...
Source: Radiation and Environmental Biophysics - April 26, 2024 Category: Physics Authors: G Hubert Source Type: research

Influence of rock type and geophysical properties on radon flux density
Radiat Environ Biophys. 2024 Apr 26. doi: 10.1007/s00411-024-01067-2. Online ahead of print.ABSTRACTThe most significant source of human exposure to ionizing radiation is the radioactive gas radon (basically 222Rn) and its daughter decay products, creating more than half of the effective dose from all natural sources. Radon enters buildings mainly from dense rocks, which are below building foundations at depths of 1 m and more. In this paper long-term measurements of radon flux density are analyzed, with radon exhalation from the surface of the most common rocks-loams, sandy loams, clays, clay shales, several types of sand...
Source: Radiation and Environmental Biophysics - April 26, 2024 Category: Physics Authors: N K Ryzhakova K O Stavitskaya S A Plastun Source Type: research

A Monte Carlo simulation-based decision support system for radiation oncologists in the treatment of glioblastoma multiforme
Radiat Environ Biophys. 2024 Apr 25. doi: 10.1007/s00411-024-01065-4. Online ahead of print.ABSTRACTIn the present research, we have developed a model-based crisp logic function statistical classifier decision support system supplemented with treatment planning systems for radiation oncologists in the treatment of glioblastoma multiforme (GBM). This system is based on Monte Carlo radiation transport simulation and it recreates visualization of treatment environments on mathematical anthropomorphic brain (MAB) phantoms. Energy deposition within tumour tissue and normal tissues are graded by quality audit factors which ensur...
Source: Radiation and Environmental Biophysics - April 25, 2024 Category: Physics Authors: C Praveen Kumar Lalit M Aggarwal Saju Bhasi Neeraj Sharma Source Type: research

The effects of re-irradiation on the chemical and morphological properties of permanent teeth
This study aimed to assess the in vitro effects of re-irradiation on enamel and dentin properties, simulating head and neck cancer radiotherapy retreatment. Forty-five human permanent molars were classified into five groups: non-irradiated; irradiated 60 Gy, and re-irradiated with doses of 30, 40, and 50 Gy. Raman spectroscopy, scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDS) were employed for analysis. Raman spectroscopy assessed intensity, spectral area, and specific peaks comparatively. Statistical analysis involved Kolmogorov-Smirnov and One-Way ANOVA tests, with Tukey's post-test (sig...
Source: Radiation and Environmental Biophysics - April 16, 2024 Category: Physics Authors: Thais Tedeschi Dos Santos Vicente Silva Mattos Kelly Fernanda Molena Francisco Wanderley Garcia de Paula-Silva Harley Francisco de Oliveira Juliana Jendiroba Faraoni Paulo Nelson-Filho Jarbas Caiado de Castro Neto Regina Guenka Palma-Dibb Alexandra Mussol Source Type: research