ojrdrtОнкологический журнал: лучевая диагностика, лучевая терапияJournal of oncology: diagnostic radiology and radiotherapy2587-75932713-167XНЕКОММЕРЧЕСКОЕ ПАРТНЕРСТВО «ОБЩЕСТВО ИНТЕРВЕНЦИОННЫХ ОНКОРАДИОЛОГОВ»10.37174/2587-7593-2021-4-1-65-73ojrdrt-158Research ArticleМЕДИЦИНСКАЯ ФИЗИКАMEDICAL PHYSICSАнализ дозовой нагрузки на беременную пациентку при лучевой терапии рака ротоглоткиAnalysis of Dose Load on a Pregnant patient in Radiotherapy of Oropharal CancerСанниковаЕ. О.SannikovaE. O.

медицинский физик,

115478, Москва, Каширское шоссе, 24

24 Kashirskoye Highway, Moscow 115478

ЛебеденкоИ. М.LebedenkoI. M.

доктор биологических наук, старший научный сотрудник,

115478, Москва, Каширское шоссе, 24

24 Kashirskoye Highway, Moscow 115478

imlebedenko@mail.ruХромовС. С.KhromovS. S.

научный сотрудник,

115478, Москва, Каширское шоссе, 24

24 Kashirskoye Highway, Moscow 115478

ГорлачёвГ. Е.GorlachevG. E.

кандидат физико-математических наук, старший научный сотрудник,

115478, Москва, Каширское шоссе, 24

24 Kashirskoye Highway, Moscow 115478

Национальный медицинский исследовательский центр онкологии им. Н.Н. Блохина Минздрава РоссииРоссияN.N. Blokhin National Medical Research Center of OncologyRussian Federation202112042021416573Copyright © Санникова Е.О., Лебеденко И.М., Хромов С.С., Горлачёв Г.Е., 20212021Санникова Е.О., Лебеденко И.М., Хромов С.С., Горлачёв Г.Е.Sannikova E.O., Lebedenko I.M., Khromov S.S., Gorlachev G.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.oncoradjournal.ru/jour/article/view/158Цель

Цель: Провести оценку дозовой нагрузки на беременную пациентку при облучении опухоли ротоглотки на разных расстояниях от границы поля облучения, в том числе и на уровне, соответствующем положению плода.

Материал и методы

Материал и методы: Для расчета плана облучения использовали систему планирования ECLIPSE с алгоритмом ААА. Облучение осуществляли на линейном ускорителе электронов ClinaciX (Varian, США) с номинальной энергией фотонного излучения 6 МэВ. Для оценки дозовой нагрузки на плод использовали тканеэквивалентный фантом Alderson–Rando.

Результаты и заключение

Результаты и заключение: Показано, что суммарная поглощённая доза на уровне и ниже диафрагмы (уровень расположения плода) на расстоянии более 40 см от границы поля облучения за весь курс лучевой терапии оказалась существенно меньше допустимых и указанных в литературе пределов и составила от 41,71 мГр до 14,03 мГр.

Purpose

Purpose: The assessment of the dose load on a pregnant patient during irradiation of the oropharyngeal tumor at different distances from the border of the irradiated field, including at the level corresponding to the position of the fetus, based on phantom measurements.

Material and methods

Material and methods: To calculate the exposure plan, the ECLIPSE planning system with the AAA algorithm was used. Irradiation was performed on a LinacClinaciX (Varian, USA) with a nominal photon energy of 6 MeV. The tissue equivalent phantom Alderson–Rando was used to assess the dose load on the fetus.

Results and conclusions

Results and conclusions: It was shown that the total absorbed dose at the level and below the diaphragm (the level of the fetus) at a distance of more than 40 cm from the border of the irradiation field for the entire course of radiation therapy turned out to be significantly less than the permissible limits indicated in the literature and amounted from 41.71 to 14.03 mGy. 

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