The local skin dose conversion coefficients of electrons, protons and alpha particles calculated using the Geant4 code

2013 ◽  
Vol 156 (4) ◽  
pp. 514-517 ◽  
Author(s):  
B. Zhang ◽  
B. Dang ◽  
Z. Wang ◽  
W. Wei ◽  
W. Li
Keyword(s):  
Alpha Particles ◽  
Skin Dose ◽  
Local Skin ◽  
Geant4 Code ◽  
Conversion Coefficients

CONTEMPORARY RADIATION DOSES IN INTERVENTIONAL CARDIOLOGY: A NATIONWIDE STUDY OF PATIENT SKIN DOSES IN FINLAND

2019 ◽  
Vol 188 (2) ◽  
pp. 181-190
Author(s):  
Jukka Järvinen ◽  
Joanna Sierpowska ◽  
Teemu Siiskonen ◽  
Minna Husso ◽  
Hannu Järvinen ◽  
...  
Keyword(s):  
Interventional Cardiology ◽  
Skin Dose ◽  
Local Skin ◽  
Transcatheter Aortic Valve ◽  
Percutaneous Coronary ◽  
Data Points ◽  
To Come ◽  
Skin Doses ◽  
Area Product ◽  
Related Harm

Abstract In contemporary interventional cardiology, for typical elderly patients, the most severe radiation-related harm to patients can be considered to come from skin exposures. In this paper, maximum local skin doses in cardiological procedures are explored with Gafchromic film dosimetry. Film and reader calibrations and reading were performed at the Secondary Standards Dosimetry Laboratory of the Radiation and Nuclear Safety Authority (STUK), and data were gathered from seven hospitals in Finland. As alert levels for early transient erythema, 200 Gycm2 kerma area product (KAP) and 2000 mGy air kerma levels for transcatheter aortic valve implantations (TAVI) procedures are proposed. The largest doses were measured in TAVI (4158.8 mGy) and percutaneous coronary interventions (PCI) (941.68 mGy). Accuracies of the GE DoseWatch and Siemens CareMonitor skin dose estimates were reasonable, but more results are needed to reliably assess and validate the tools’ capabilities and reliabilities. Uncertainty of the Gafchromic dosimetry was estimated as 9.1% for a calibration with seven data points and 19.3% for a calibration with five data points.

scholarly journals Fluence to Dose Conversion Coefficients for High-Energy Neutron, Proton and Alpha Particles

2000 ◽  
Vol 37 (sup1) ◽  
pp. 865-869 ◽  
Author(s):  
Nobuaki Yoshizawa ◽  
Osamu Sato ◽  
Shunji Takagi ◽  
Shiori Furihata ◽  
Jun Funabiki ◽  
...  
Keyword(s):  
High Energy ◽  
Alpha Particles ◽  
High Energy Neutron ◽  
Energy Neutron ◽  
Conversion Coefficients

scholarly journals Skin dose contamination conversion coefficients. Benchmark with three simulation codes

2021 ◽  
Author(s):  
Thomas Frosio ◽  
Philippe Bertreix ◽  
Nabil Menaa ◽  
Samuel Thomas ◽  
Holger EBERHARDT ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Radiation Protection ◽  
State Of The Art ◽  
Radioactive Material ◽  
Skin Dose ◽  
Radionuclide Contamination ◽  
Skin Contamination ◽  
Conversion Coefficients ◽  
Dose Coefficients ◽  
Increasing Demand

Abstract Handling of radioactive material by operators can lead to contamination at the surface of the skin in case of an accident. The quantification of the dose received by the skin due to a contamination scenario is performed by means of dedicated dose coefficients as it is the case for other radiation protection dose quantities described in the literature. However, most available coefficients do not match realistic scenarios according to state-of-the-art of science and technology. Therefore, this work deals with dedicated dose conversion factors for skin contamination. Since there is an increasing demand on dose coefficients in general, these specific coefficients can be used for various calculations in radiation protection. In this work a method to evaluate such coefficients for the skin contamination dose related to photons, electrons, positrons, alpha and neutron particles is proposed. The coefficients are generated using Monte-Carlo simulations with three well established calculation codes (FLUKA, MCNP, and GEANT4). The results of the various codes are compared against each other for benchmarking purposes. The new dose coefficients allow the computation of the skin received dose, in the case of skin contamination scenario of an individual, taking into account the decay radiation of the radionuclides of interest. To benchmark the quantity derived here, comparisons of radionuclide contamination doses to the skin using the VARSKIN code available in the literature are performed with the results of this work.

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