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Thematische Bibliographien / Débit de dose gamma / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Débit de dose gamma“

Autor: Grafiati

Veröffentlicht am 25. Mai 2024

Zuletzt aktualisiert am 31. Juli 2025

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1

Bernat, P., PP Vistoli, and S. Camaro. "Étude du comportement à long terme des déchets radioactifs. Utilisation du code de calcul Mercure IV pour la détermination du débit de dose gamma dans des échantillons de grandes tailles." Journal de Chimie Physique 93 (1996): 12–15. http://dx.doi.org/10.1051/jcp/1996930012.

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2

Cosset, J. M., and C. Haie-Meder. "Curiethérapie du cancer prostatique : haut débit ou bas débit de dose ?" Cancer/Radiothérapie 9, no. 8 (2005): 610–19. http://dx.doi.org/10.1016/j.canrad.2005.09.019.

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3

Nickers, P., P. Blanchard, J. M. Hannoun-Lévi, A. Bossi, O. Chapet, and S. Guérif. "Curiethérapie prostatique de haut débit de dose." Cancer/Radiothérapie 17, no. 2 (2013): 118–24. http://dx.doi.org/10.1016/j.canrad.2013.02.005.

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4

Fouillade, Charles, Vincent Favaudon, Marie-Catherine Vozenin, et al. "Les promesses du haut débit de dose en radiothérapie." Bulletin du Cancer 104, no. 4 (2017): 380–84. http://dx.doi.org/10.1016/j.bulcan.2017.01.012.

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5

Métayer, Y., P. Meyer, C. Brunaud, and D. Peiffert. "Contrôle de qualité en curiethérapie de débit de dose pulsé." Cancer/Radiothérapie 13, no. 4 (2009): 318–22. http://dx.doi.org/10.1016/j.canrad.2009.02.005.

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6

Peiffert, D., D. Spaeth, O. Menard, and J. Winnefeld. "La curiethérapie endobronchique de haut débit de dose: un traitement curatif." Cancer/Radiothérapie 4, no. 3 (2000): 197–201. http://dx.doi.org/10.1016/s1278-3218(00)89094-0.

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7

Charra-Brunaud, C., D. Peiffert, S. Hoffstetter, C. Marchai, V. Beckendorf, and P. Bey. "Curiethérapie postopératoire à bas débit de dose des adénocarcinomes de ï'endomètre." Bulletin du Cancer/Radiothérapie 83, no. 4 (1996): 422. http://dx.doi.org/10.1016/s0924-4212(97)86127-0.

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8

Le Bourhis, J., J. F. Moreira, V. Chassin, D. Donnarieix, and M. Lapeyre. "Curiethérapie interstitielle de débit pulsé ORL : utilisation des histogrammes dose–volume." Cancer/Radiothérapie 15, no. 6-7 (2011): 562. http://dx.doi.org/10.1016/j.canrad.2011.07.008.

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9

Bernadou, G., I. Barillot, A. Régnault-Bougnoux, G. Calais, S. Chapet, and A. Ruffier-Loubière. "Analyse comparative de la toxicité tardive de la curiethérapie de haut débit de dose et de celle de bas débit de dose du cancer de l’endomètre." Cancer/Radiothérapie 19, no. 6-7 (2015): 685–86. http://dx.doi.org/10.1016/j.canrad.2015.07.121.

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10

Charra-Brunaud, C., D. Peiffert, S. Hoffstetter, E. Luporsi, F. Guillemin, and P. Bey. "Curiethérapie vaginale postopératoire des adénocarcinomes de l'endomètre à bas débit de dose." Cancer/Radiothérapie 2, no. 1 (1998): 34–41. http://dx.doi.org/10.1016/s1278-3218(98)89059-8.

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11

Wdowczyk, D., P. Joffroy, and T. Pangrazzi. "Curiethérapie de prostate de haut débit de dose : descriptif des outils dosimétriques." Cancer/Radiothérapie 13, no. 6-7 (2009): 685–86. http://dx.doi.org/10.1016/j.canrad.2009.08.110.

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12

Reygagne Viera, E., V. Huguier, O. Boissonade, et al. "Curiethérapie de haut débit de dose multifractionnée des cicatrices chéloïdes : expérience préliminaire." Cancer/Radiothérapie 18, no. 5-6 (2014): 636. http://dx.doi.org/10.1016/j.canrad.2014.07.140.

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13

Hansen, Joyce M., Niki Fidopiastis, Trabue Bryans, Michelle Luebke, and Terri Rymer. "Radiation Sterilization: Dose Is Dose." Biomedical Instrumentation & Technology 54, s1 (2020): 45–52. http://dx.doi.org/10.2345/0899-8205-54.s3.45.

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Abstract In the radiation sterilization arena, the question often arises as to whether radiation resistance of microorganisms might be affected by the energy level of the radiation source and the rate of the dose delivered (kGy/time). The basis for the question is if the microbial lethality is affected by the radiation energy level and/or the rate the dose is delivered, then the ability to transfer dose among different radiation sources could be challenged. This study addressed that question by performing a microbial inactivation study using two radiation sources (gamma and electron beam [E-be

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14

Taulelle, M., B. Chauvet, P. Vincent, et al. "Curiethérapie endobronchique à haut débit de dose : résultats et complications chez 189 patients." Bulletin du Cancer/Radiothérapie 83, no. 3 (1996): 127–34. http://dx.doi.org/10.1016/0924-4212(96)81744-0.

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15

Favaudon, V. "Radiothérapie flash à très haut débit de dose : point sur les avancées récentes." Cancer/Radiothérapie 23, no. 6-7 (2019): 674–76. http://dx.doi.org/10.1016/j.canrad.2019.07.127.

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16

Low, Daniel A. "Gamma Dose Distribution Evaluation Tool." Journal of Physics: Conference Series 250 (November 1, 2010): 012071. http://dx.doi.org/10.1088/1742-6596/250/1/012071.

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17

Leclerc, M., C. Béchade, P. Henri, et al. "Le débit de la pompe à sang n’a que peu d’impact sur la dose de dialyse en hémodialyse quotidienne à bas débit de dialysat." Néphrologie & Thérapeutique 12, no. 5 (2016): 327. http://dx.doi.org/10.1016/j.nephro.2016.07.095.

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18

Omori, Y., S. Inoue, T. Otsuka, Y. Nagamatsu, A. Sorimachi, and T. Ishikawa. "REDUCTION IN AMBIENT GAMMA DOSE RATE FROM RADIOCESIUM DUE TO SNOW COVER." Radiation Protection Dosimetry 184, no. 3-4 (2019): 510–13. http://dx.doi.org/10.1093/rpd/ncz091.

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Abstract In the present study, variations in ambient gamma dose rate associated with snow cover were examined in a radioactive-contaminated site in Fukushima Prefecture, Japan. The ambient gamma dose rates decreased with increasing snow depth. The reduction trends were different between fresh snow (0.1–0.2 g/cm3) and granular snow (0.3–0.4 g/cm3) depending on snow density. Snow cover water content (snow water equivalent) calculated from snow depth and density was a key parameter governing the reduction in the ambient gamma dose rate. The ambient gamma dose rates reduced to 0.6 and 0.5 at 4 g/c

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19

Kochbati, L., H. Marsiglia, P. Baldeyrou, et al. "Curiethérapie à haut débit de dose (CHDD) à visée palliative dans les cancers bronchiques." Bulletin du Cancer/Radiothérapie 83, no. 4 (1996): 424. http://dx.doi.org/10.1016/s0924-4212(97)86134-8.

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20

-Ferlet-Cavrois, Véronique. "Simulation de l'effet du débit de dose sur des transistors MOS en technologie SOI." Revue de l'Electricité et de l'Electronique -, no. 04 (1997): 83. http://dx.doi.org/10.3845/ree.1997.053.

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21

Moreau-Claeys, M. V., C. Brunaud, S. Hoffstetter, I. Buchheit, and D. Peiffert. "Curiethérapie postopératoire du fond vaginal de haut débit de dose dans le cancer endométrial." Cancer/Radiothérapie 15, no. 3 (2011): 169–75. http://dx.doi.org/10.1016/j.canrad.2010.09.002.

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22

Mazeron, R., I. Dumas, V. Martin, et al. "Curiethérapie de débit de dose pulsé dans les cancers du col utérin : pourquoi, comment ?" Cancer/Radiothérapie 18, no. 5-6 (2014): 447–51. http://dx.doi.org/10.1016/j.canrad.2014.06.010.

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23

Roussille, P., B. Roullet, O. Boissonnade, et al. "Curiethérapie de haut débit de dose, anale, multifractionnée : évaluation préliminaire de la réponse clinique." Cancer/Radiothérapie 19, no. 6-7 (2015): 681–82. http://dx.doi.org/10.1016/j.canrad.2015.07.112.

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24

Marchal, C., C. Corbice, and C. Marchal. "Installation d’un projecteur de curiethérapie de haut débit de dose dans un bunker d’accélérateur." Cancer/Radiothérapie 19, no. 6-7 (2015): 695–96. http://dx.doi.org/10.1016/j.canrad.2015.07.146.

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25

Benabid, D., D. Brune, F. Lesaunier, JC Vernhes, B. Mauger, and JF Tranchant. "P61 La curiethérapie endocavitaire vaginale à bas débit de dose (BDD), et la curiethérapie à haut débit de dose (HDD), dans le cancer de l'endomètre: expérience du centre Francois-Baclesse de Caen." Cancer/Radiothérapie 2, no. 5 (1998): 633. http://dx.doi.org/10.1016/s1278-3218(98)80134-0.

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26

Omori, Yasutaka, Takuma Ishikawa, Atsuyuki Sorimachi, and Tetsuo Ishikawa. "DISTRIBUTIONS OF INDOOR GAMMA DOSE RATES IN RELATION TO GAMMA-RAY EMISSIONS FROM BUILDING MATERIALS: CASE STUDY OF HIGH-RISE CONCRETE BUILDING IN FUKUSHIMA." Radiation Protection Dosimetry 184, no. 1 (2018): 116–26. http://dx.doi.org/10.1093/rpd/ncy192.

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Abstract The spatial distribution of ambient gamma dose rates in a high-rise steel-reinforced concrete building in Fukushima, Japan, was examined relative to the gamma-ray emissions from building materials and radionuclides derived from the 2011 nuclear accident. The results revealed the minor role of accident-derived radionuclides in ambient gamma dose rates ~7 y after the accident. The ambient gamma dose rates were higher in the upper floors because of gamma-ray emissions from natural radionuclides in the floor slabs. The fractional contribution of natural radionuclides to the ambient gamma

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27

Sarradin, M., I. Troussier, C. Évrard, et al. "Escalade de dose focale sur l’indice tumoral par curiethérapie de haut débit de dose associée et radiothérapie tridimensionnelle conformationnelle." Cancer/Radiothérapie 19, no. 6-7 (2015): 671–72. http://dx.doi.org/10.1016/j.canrad.2015.07.087.

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28

Saini, H. K., and M. I. S. Gill. "Induction of Mutation in Rough Lemon (Citrus jambhiri Lush.) Using Gamma Rays." Journal of Horticultural Sciences 4, no. 1 (2009): 41–44. http://dx.doi.org/10.24154/jhs.v4i1.554.

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The present investigation was carried out to study variability induced by gamma rays with respect to vegetative characters and LD50 dose in Rough lemon. Rough lemon seeds were gamma irradiated at doses of 0, 4, 6 and 8 kr along with control. Seed germination decreased with increasing dose of gamma radiation. Seedling height and leaf size also decreased with increasing dose of gamma radiation, whereas, apical branching, number of branches/seedling, number of variegated / albino seedlings and number of leaves increased with increasing dose of gamma radiation. Maximum variability for seedling hei

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29

Omori, Yasutaka, Atsuyuki Sorimachi, Manlaijav Gun-Aajav, et al. "ELEVATION OF GAMMA DOSE RATE BY CONSTRUCTION OF THE ASIAN HIGHWAY 3 (AH3) BETWEEN ULAANBAATAR AND SAINSHAND, MONGOLIA." Radiation Protection Dosimetry 184, no. 1 (2018): 127–34. http://dx.doi.org/10.1093/rpd/ncy173.

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Abstract The present study aimed at examining changes of gamma radiation level associated with road construction in Mongolia. A car-borne survey of gamma dose rate was made for a paved, ~450-km long part of the Asian Highway 3 between Ulaanbaatar and Sainshand. The gamma dose rates ranged from 48 to 173 nGy/h. Elevation of the gamma dose rates was observed only on a 86-km long segment of the survey route which was newly constructed from 2011 to 2013. The gamma dose rates over the newer paved segment were twice as high as those over the bare dirt surface alongside it. Outdoor measurements of ga

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30

Waheeb, Ahmed H., Zeinab Eltaher, Mohamed N. Yassin, and Magdy M. Khalil. "Comparison between different Dosimetric Tools based on Intensity-modulated Radiotherapy (IMRT): A Phantom Study." NeuroQuantology 19, no. 11 (2021): 141–50. http://dx.doi.org/10.14704/nq.2021.19.11.nq21184.

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This study examined the gamma passing rate (GPR) consistency during applying different kinds of gamma analyses and dosimeters to IMRT. Methods: Import treatment protocols for QA phantom irradiation have been recalculated. A gamma analysis was used for comparing the measured and calculated dose distribution of IMRT for different gamma criteria (2%/2mm, 3%/3mm, 4%/4mm, 3%/5mm, 3%/5mm). These criteria are evaluated when 5%, 10%, or 15% of the dose distribution is suppressed. Measured and calculated dose distribution was evaluated with gamma analysis to dose difference (DD) with DTA criteria (dist

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31

Kulhar, Manjeet, Kashyap Dhoot, and Arun Pandya. "Gamma Dose Rate Measurement Using RadFET." IEEE Transactions on Nuclear Science 66, no. 10 (2019): 2220–28. http://dx.doi.org/10.1109/tns.2019.2942955.

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32

Aitken, M. J., and J. Xie. "Moisture correction for annual gamma dose." Ancient TL 8, no. 2 (1990): 6–9. https://doi.org/10.26034/la.atl.1990.157.

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33

Shamshad, A., M. Rashid, and A. Husain. "High gamma dose dosimetry by polycarbonates." Radiation Physics and Chemistry 50, no. 3 (1997): 307–11. http://dx.doi.org/10.1016/s0969-806x(97)00038-8.

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34

Wahjuningrum, Dian Agustin, Setyabudi Setyabudi, Darmawan Darwis, and Andi Syahrimayani. "Determination of gamma radiation sterilization dose on bioceramic BCP-Sr-Ag as bone graft according to ISO 11137 standards." Conservative Dentistry Journal 13, no. 1 (2023): 19–23. http://dx.doi.org/10.20473/cdj.v13i1.2023.19-23.

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Background: BCP-Sr-Ag as a bone graft needs to be sterilized. One way of sterilization is to use gamma radiation. Sterilization by gamma radiation requires the correct sterilization dose. Based on ISO 11137 the determination of the sterilization dose through 3 steps: determination bioburden, determination of verification dose, and determination of sterilization dose. Purpose:Determination of gamma radiation sterilization dose on BCP-Sr-Ag bioceramic as bone graft based on ISO 11137 through determination bioburden, determination verification dose, and determination of sterilization dose. Method

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35

Alves, Carlos, and Jorge Sanjurjo-Sánchez. "An Overview of Radiological Hazards Related to Geological External Gamma Radiation in Outdoor Environments." Proceedings 2, no. 10 (2018): 562. http://dx.doi.org/10.3390/iecg_2018-05337.

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Rocks and soils are an important source of external gamma radiation due to their content in U, Th, and K. The dose rate derived from the emission of gamma-rays of radioisotopes can be directly measured or assessed from their content. In the present study, values of outdoor gamma radiation absorbed dose rate are analyzed to explore the implications of levels related to those values in terms of the exposure time necessary for attaining a certain yearly effective dose. We propose simple relations with the absorbed dose rate and with the gamma index of materials.

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36

KARATEPE ÇELİK, Şule, and Sultan ŞAHİN BAL. "Environmental Gamma Dose Measurement in Arin Lake (Bitlis)." Karadeniz Fen Bilimleri Dergisi 13, no. 4 (2023): 1729–37. http://dx.doi.org/10.31466/kfbd.1332646.

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Arin Lake is a stopover for many migratory bird species, mostly flamingos and songbirds.The assignment of gamma dose rate is very important for the air quality of an environment and human health. For this purpose, the environmental gamma radiation dose rate in air was measured for 27 different point in Arin Lake area in Bitlis province. Measurements were conducted using a portable gamma survey meter supplied with a NaI(Tl) scintillation detector. Gamma dose values were measured in the range 0.035 - 0.165 μSv/h for ground level with mean 0.117 μSv/h. Similarly gamma dose values for 1 m above th

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37

Top, Gülcan, Yüksel Örgün, Gürsel Karahan, Mark Horvath, and Györgyi Kampfl. "EFFECTS OF LOCAL BUILDING MATERIALS ON INDOOR GAMMA DOSES AND RELATED RADIOLOGICAL HEALTH RISKS, AYVACIK, ÇANAKKALE/TURKEY." Radiation Protection Dosimetry 190, no. 1 (2020): 108–17. http://dx.doi.org/10.1093/rpd/ncaa086.

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Abstract In situ indoor gamma dose rate measurements were held in 79 dwellings by NaI(Tl) scintillation probe connected portable dose rate meter. For the building materials and impurities (nodules), spectrometric gamma analysis was applied by a high-resolution HpGe detector. For Ahmetçe and Nusratlı villages in Ayvacik/Çanakkale (Turkey), the measured in situ indoor gamma dose rates and related indoor annual effective dose equivalents (AEDEin) were 3 and 3.3 times, and indoor excess lifetime cancer risks (ELCRin) were 4.25 and 4.68 times higher than those of the world averages, respectively. T

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38

Gromov, Alexander A., Alexander P. Zhanzhora, and Vladimir F. Shikalov. "Certification of a specialized source of gamma radiation spatially combined with modeling reference field of neutron radiation." Izmeritel`naya Tekhnika, no. 3 (2021): 53–57. http://dx.doi.org/10.32446/0368-1025it.2021-3-53-57.

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The results of metrological studies of the field of the experimental channel of the research nuclear reactor OR (experimental base of the NRC “Kurchatov Institute”) with a capacity of 0.1–300 kW are presented. The empirical dependence of the contribution of the absorbed dose of gamma radiation during the raising and lowering reactor power in the total absorbed dose during the irradiation in the reactor and absorbed dose rate from a power reactor OR in the steady state. Based on these results, the absorbed dose and absorbed dose rate of gamma radiation can be pre-calculated. According to metrol

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39

Trihi, M., JL Duroux, MJ Hyvernaud, and M. Bernard. "Dosimétrie à haut débit de dose : mise au point d'un « chronodosimètre » à base de PMMA." Journal de Chimie Physique 93 (1996): 231–34. http://dx.doi.org/10.1051/jcp/1996930231.

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40

Ma, Lijun, Lynn Verhey, Cynthia Chuang, et al. "Effect of composite sector collimation on average dose fall-off for Gamma Knife Perfexion." Journal of Neurosurgery 109, Supplement (2008): 15–20. http://dx.doi.org/10.3171/jns/2008/109/12/s4.

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Object The new capability of composite sector collimation in Gamma Knife Perfexion produces complex, nonspherical, and nonelliptical dose distributions. In this study, the authors investigated the effect of composite sector collimation on average dose fall-off compared with the previous Gamma Knife model. Methods A general formalism was derived to describe the peripheral dose distribution of all Gamma Knife models in the form of (V/V0) = (D/D0)γ, where V is the volume of the peripheral isodose line with the value of D, V0 is the reference prescription isodose volume, D0 is the prescription dos

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41

Saleh, Muneer Aziz, Ahmad Termizi Ramli, Khaidzir Bin Hamzah, et al. "In situ measurement of terrestrial gamma dose rates in eastern region of Peninsular Malaysia and its relation to geological formation and soil types." Radiochimica Acta 107, no. 6 (2019): 503–16. http://dx.doi.org/10.1515/ract-2018-2950.

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Abstract This present study aims to obtain baseline data of environmental terrestrial radiation and to assess the corresponding health risk in the ambient environment in eastern region of Peninsular Malaysia. The measurements were taken 1 m above the soil surface using NaI [Ti] detector with a total of 2144 measured points which covered all geological formations and soil types. The measured gamma dose rates ranged from 26 nGy h−1 to 750 nGy h−1 with a mean value of 172±90 nGy h−1. The mean gamma dose rate is three times higher than world averages of 57 nGy h−1. The data of gamma dose rates sho

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42

Biagtan, E., E. Goldberg, R. Stephens, E. Valeroso, and J. Harmon. "Gamma dose and dose rate effects on scintillator light output." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 108, no. 1-2 (1996): 125–28. http://dx.doi.org/10.1016/0168-583x(95)00874-8.

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43

Al-Azmi, Darwish. "Indoor Gamma Dose Rates In Kuwait Using Handheld Gamma-ray Spectrometer." Health Physics 111, no. 1 (2016): 11–16. http://dx.doi.org/10.1097/hp.0000000000000510.

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44

Sanzelle, S., H. Erramli, J. Faïn, and D. Miallier. "The assessment of gamma dose-rate by gamma-ray field spectrometer." International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements 14, no. 1-2 (1988): 209–13. http://dx.doi.org/10.1016/1359-0189(88)90066-0.

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45

Kaur, Manpreet, Ajay Kumar, Rohit Mehra, and Rosaline Mishra. "Seasonal variation of indoor and outdoor gamma dose rates of Reasi district of Jammu and Kashmir." Nuclear Technology and Radiation Protection 33, no. 1 (2018): 106–11. http://dx.doi.org/10.2298/ntrp1801106k.

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In the present study, the indoor gamma dose rate has been studied seasonally and the outdoor gamma dose rate was also measured in and around the 24 dwellings of 10 villages of Reasi district of Jammu and Kashmir, India, at about one meter above the ground surfaces by using Dosimeter-Radiometer MKS-03 (SARAD). The study was carried out to assess the annual equivalent dose rate for the inhabitants of the dwellings. The survey was designed in such a way so as to obtain a uniform and representative distribution of measurements locations. The indoor to outdoor dose ratio was calculated as 1.8, whic

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46

Obajdin, Nevena, Djeni Smilovic-Radojcic, David Rajlic, Manda Svabic-Kolacio, and Slaven Jurkovic. "Impact of stringent tolerance criteria on verification of absorbed dose distributions and evaluation through inhomogeneous media." Nuclear Technology and Radiation Protection 37, no. 2 (2022): 138–44. http://dx.doi.org/10.2298/ntrp2202138o.

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Advances of radiation delivery devices have increased the complexity of the radiation oncology treatments. Herewith, outcome of the treatment, as well as patient safety, strongly depend on the consistency of absorbed dose delivery. Both can be ensured by comprehensive system of verification of calculated absorbed dose distributions. Standard method is evaluation of calculated absorbed dose distribution according to gamma method, using a 2-D detector and a homogeneous phantom, to obtain measured dose distribution. Purpose of this research was to investigate the influence of tolerance criteria o

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Rakotovao, L. O., Sidik Permana, R. H. Oetami, and Rasito. "Simulation of Neutron and Gamma Dose Rate of The TRIGA 2000 Reactor Using Monte Carlo Method." Journal of Physics: Conference Series 2328, no. 1 (2022): 012007. http://dx.doi.org/10.1088/1742-6596/2328/1/012007.

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Abstract The neutron and gamma radiation doses were calculated from the operation of the 1 MW TRIGA 2000 Reactor in a simulation using the Monte Carlo method with MCNPX and PHITS program. Simulation is done by modelling the geometry of the reactor component materials and running it on a computer. The radiation source in the form of a fission reaction in the reactor core has been simulated using MCNPX to produce a dose of neutron and gamma radiation in the TRIGA 2000 core. Attenuation of neutron and gamma radiation by the reactor building is simulated using the PHITS code so that the neutron an

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Ghiasi, Hosein, and Asghar Mesbahi. "Gantry orientation effect on the neutron and capture gamma ray dose equivalent at the maze entrance door in radiation therapy." Nuclear Technology and Radiation Protection 27, no. 1 (2012): 70–74. http://dx.doi.org/10.2298/ntrp1201070g.

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In the present study, the effect of gantry orientation on the photoneutron and capture gamma dose calculations for maze entrance door was evaluated. A typical radiation therapy room made of ordinary concrete was simulated using MCNPX Monte Carlo code. Gantry rotation was simulated at eight different angles around the isocenter. Both neutron and capture gamma dose vary considerably with gantry angle. The ratios of the maximum to the minimum values for neutron and capture gamma dose equivalents were 1.9 and 1.4, respectively. On the other hand, comparison of the Monte Carlo calculated mean value

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Maraghechi, Borna, Jack Davis, Shyam Badu, Andre Fleck, Johnson Darko, and Ernest Osei. "Retrospective analysis of portal dosimetry pre-treatment quality assurance of prostate volumetric-modulated arc therapy (VMAT) plans." Journal of Radiotherapy in Practice 17, no. 1 (2017): 44–52. http://dx.doi.org/10.1017/s1460396917000486.

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AbstractBackgroundElectronic portal imaging device (EPID) offers high-resolution digital image that can be compared with a predicted portal dose image. A very common method to quantitatively compare a measured and calculated dose distribution that is routinely used for quality assurance (QA) of volumetric-modulated arc therapy (VMAT) and intensity-modulated radiation therapy treatment plans is the evaluation of the gamma index. The purpose of this work was to evaluate the gamma passing rate (%GP), maximum gamma (γmax), average gamma (γave), maximum dose difference (DDmax) and the average dose

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Leontaris, F., A. Boziari, A. Clouvas, M. Kolovou, and J. Guilhot. "PROCEDURES TO MEASURE MEAN AMBIENT DOSE EQUIVALENT RATES USING ELECTRET ION CHAMBERS." Radiation Protection Dosimetry 190, no. 1 (2020): 6–21. http://dx.doi.org/10.1093/rpd/ncaa061.

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Abstract The capabilities of electret ion chambers (EICs) to measure mean ambient dose equivalent rates were investigated by performing both laboratory and field studies of their properties. First, EICs were ‘calibrated’ to measure ambient gamma dose equivalent in the Ionizing Calibration Laboratory of the Greek Atomic Energy Commission. The EICs were irradiated with different gamma photon energies and from different angles. Calibration factors were deduced (electret’s voltage drop due to irradiation in terms of ambient dose equivalent). In the field studies, EICs were installed at eight locat

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