1. A protocol for accurate radiochromic film dosimetry using Radiochromic.comIgnasi Méndez Carot, Juan José Rovira-Escutia, Božidar Casar, 2021, original scientific article Abstract: Radiochromic films have many applications in radiology and radiation therapy. Generally, the dosim-etry system for radiochromic film dosimetry is composed of radiochromic films, flatbed scanner, and film analysis soft-ware. The purpose of this work is to present the effectiveness of a protocol for accurate radiochromic film dosimetry using Radiochromic.com as software for film analysis.Materials and methods. Procedures for image acquisition, lot calibration, and dose calculation are explained and analyzed. Radiochromic.com enables state-of-the-art models and corrections for radiochromic film dosimetry, such as the Multigaussian model for multichannel film dosimetry, and lateral, inter-scan, and re-calibration corrections of the response.Results. The protocol presented here provides accurate dose results by mitigating the sources of uncertainty that affect radiochromic film dosimetry. Conclusions. Appropriate procedures for film and scanner handling in combination with Radiochromic.com as software for film analysis make easy and accurate radiochromic film dosimetry feasible.
Keywords: radiochromic film, dosimetry, protocol
Published in DiRROS: 22.07.2024; Views: 222; Downloads: 140
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2. Effect of a warm-up protocol with and without facemask-use against COVID-19 on cognitive function : ǂa ǂpilot, randomized counterbalanced, cross-sectional studyMaamer Slimani, Bianca Miarka, Hela Znazen, Wassim Moalla, Amri Hammami, Armin Paravlić, Nicola Luigi Bragazzi, 2021, original scientific article Abstract: The present study aimed to verify the effect of a warm-up protocol with and without facemask-use on cognitive function. The sample was composed of 17 healthy, non-smoking physical education students (age = 17.6 years, height = 1.71 m, and body mass = 69.7 kg). They were randomized to perform 15 min of warm-up exercises, while wearing a cloth facemask (EXP) or no mask (CON) on two separate occasions, with at least 48-h separating conditions. Rate of perceived exertion (RPE) and d2 Attention assessment were used to verify cognitive function, using a repeated measures general linear model. The warm-up improved cognitive abilities and the results demonstrated significant differences between the EXP vs. CON groups in post-concentration performance (186.06 % 15.47 EXP-score vs. 178.12 % 13.66 CON-score), post the total number of errors (23.47 % 14.50 EXP-frequency < 29.06 % 13.74 CON-frequency), and in the post RPE (6.0 % 1.37 EXP-index > 4.7 % 0.85 CON-index). Wearing a cloth facemask caused positive effects on cognitive function. This data suggests that wearing a cloth facemask during warm-up may stimulate/improve the cognitive function.
Keywords: pandemic, coronavirus, COVID-19, physical activities, exercises, facemasks, warm-up protocol, cognitive functions, neuropsychological tests
Published in DiRROS: 11.06.2021; Views: 1229; Downloads: 1773
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