radhydРадиационная гигиенаRadiatsionnaya Gygiena = Radiation Hygiene1998-426X2409-9082NIIRGradhyd-30Research ArticleНаучные статьиScientific articlesЭКСПЕРИМЕНТАЛЬНОЕ ОПРЕДЕЛЕНИЕ ДОЗОВЫХ КОЭФФИЦИЕНТОВ ПЕРЕХОДА ДЛЯ ВНЕШНЕГО ОБЛУЧЕНИЯ ГАММА-ИЗЛУЧАЮЩИМИ РАДИОНУКЛИДАМИEXPERIMENTAL DETERMINATION OF DOSE CONVERSION COEFFICIENTS FOR EXTERNAL RADIATION EXPOSURE WITH GAMMA EMITTING RADIONUCLIDESБернардссонК.BernhardssonC.Christian.Bernhardsson@med.lu.seГруппа медицинской физики, департамент естественных наук Лундского университета, университетский госпиталь региона Скона, МальмоШвецияMedical Radiation Physics, Department of Clinical Sciences, Malmö, Lund University, Skåne University Hospital, 205 02 MalmöSweden20141308201574117133Copyright © Бернардссон К., 20152015Бернардссон К.Bernhardsson C.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.radhyg.ru/jour/article/view/30

В данной работе был использован фантом Алдерсон-РАНДО для экспериментального определения коэффициентов перехода для условий внешнего облучения. Были смоделированы следующие конфигурации облучения: ротационная геометрия облучения с использованием различных точечных источников (99mTc,131I+133Ba, 137Cs, 60Co); передне-задняя и задне-передняя геометрия облучения источником 137Cs; особая геометрия облучения источником 137Cs, находящимся в кармане брюк. Все эксперименты проводились на открытом пространстве, чтобы уменьшить вклад рассеянного излучения. Данная работа является первым шагом на пути к определению коэффициентов перехода для более сложных условий облучения. Представленные в работе коэффициенты перехода могут быть использованы как сами по себе, так и в сравнении с расчетными коэффициентами, определёнными с помощью метода Монте-Карло для аналогичных условий облучения.

In the present paper an Alderson RANDO phantom have been used to experimentally determine conversion coefficients for external exposure. A limited number of exposure situations were investigated: rotational geometry with different radiation point sources (99mTc, 131I+133Ba, 137Cs, 60Co), APand PA-geometry with 137Cs and a special pocket-geometry with 137Cs. All experiments were carried out on a large open field to avoid scattering effects from walls and roof. The established conversion coefficients are a first step to later determine more conversion coefficients for more complex exposure situations. The coefficients presented here may therefore be used directly or as a comparison to Monte Carlo simulated values of the same exposure situations.

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The authors declare that there are no conflicts of interest present.