Измерение поглощенной дозы в коже пациентов, подвергающихся интервенционным исследованиям, с помощью радиохромных пленок Gafchromic XR-RV3

This work is devoted to the assessment of the absorbed dose in the skin of patients undergoing interventional radiological examinations. There is a probability of deterministic effects in the skin of patients due to high doses of radiation during this type of medical examinations. The aim of this work was to conduct direct measurements of the absorbed dose in the skin of patients undergoing interventional radiological procedures using special dosimetric radiochromic films Gafchromic XR-RV3 to visualize the distribution of radiation over the patient’s skin surface and to study the possibility of exceeding the threshold values for the deterministic effects in the skin. The paper discusses the features of measurements with GafchromiC XR-RV3 films. The method of film digitization on conventional flatbed scanner and image processing with the ImageJ program was tested. The obtained calibration curve for this type of film was presented. The skin dose distributions for several interventional studies obtained with radiochromic films were presented. The measured value of the maximum absorbed dose in the skin for four of the fourteen analyzed procedures exceeded the threshold value of the absorbed dose for the occurrence of skin erythema in 2 Gy. The highest values of the maximum absorbed dose in the skin were obtained for the coronary angioplasty – 3.2 Gy and for the procedure of embolization of the uterine arteries – 2.9 Gy.Данная работа посвящена оценке поглощенной дозы в коже пациентов, подвергающихся интервенционным рентгенологическим исследованиям. В связи с высокими дозами облучения при проведении данного вида медицинских исследований может существовать вероятность возникновения детерминированных эффектов в коже пациентов. Целью данной работы было проведение прямых измерений поглощенной дозы в коже пациентов, подвергающихся интервенционным рентгенологическим исследованиям с помощью специальных дозиметрических радиохромных пленок Gafchromic XR-RV3 для визуализации распределения облучения по поверхности кожи пациентов и изучения возможности превышения пороговых значений для возникновения детерминированных эффектов в коже. В работе рассмотрены особенности проведения измерений с помощью радиохромных пленок Gafchromiс XR-RV3. Апробирована методика оцифровки пленки с помощью обычного планшетного сканера с последующей обработкой изображений в программе ImageJ, представлена полученная калибровочная кривая для данного типа пленки. Продемонстрированы распределения дозы в коже при проведении ряда интервенционных исследований, полученные с помощью радиохромных пленок. Измеренное значение максимальной поглощенной дозы в коже для 4 из 14 проанализированных процедур превысило пороговое значение поглощенной дозы для возникновения кожной эритемы в 2Гр. Самые большие значения максимальной поглощенной дозы в коже были получены для процедуры коронарной ангиопластики – 3,2 Гр и для процедуры эмболизации маточных артерий – 2,9 Гр

Typology of Rural Territories of the Russian Federation Subjects

The article is devoted to the methodological approaches of the complex typology of the Russian Federation rural areas for the purposes of regional governance. The proposed method takes into account the differences in rural areas of the region in terms of socio-economic development, the economic potential and limitations of its use, based on the application of multivariate statistical analysis of integrated indicators. It summarizes the main problems of socio-economic development of the Russian Federation rural areas, one of the reasons, which, according to the authors, is an insufficient account of the special areas in the implementation of rural development policies at both the Federal and regional levels of government. Here it is suggested a hierarchical system of indicators which is used to develop a typology of regional rural areas, including aggregated typology criteria: the level of economic potential, the level of restrictions of the use of the economic potential, the level of social and economic development, as well as integrated and private figures. It is performed the approbation of the methodology with the use of data from rural municipal districts of the agricultural subject of the Russian Federation - the Republic of Buryatia. The obtained typology of rural areas allowed us to justify a differentiated approach to the management of socio-economic development of the regional rural areas. The results of the study can be recommended to the federal and regional authorities in improving the management of rural development based on a differentiated approach. DOI: 10.5901/mjss.2015.v6n3s7p20

Patients skin dose measurements during interventional radiological examinations using Gafchromic XR-RV3 FILM

This work is devoted to the assessment of the absorbed dose in the skin of patients undergoing interventional radiological examinations. There is a probability of deterministic effects in the skin of patients due to high doses of radiation during this type of medical examinations. The aim of this work was to conduct direct measurements of the absorbed dose in the skin of patients undergoing interventional radiological procedures using special dosimetric radiochromic films Gafchromic XR-RV3 to visualize the distribution of radiation over the patient’s skin surface and to study the possibility of exceeding the threshold values for the deterministic effects in the skin. The paper discusses the features of measurements with GafchromiC XR-RV3 films. The method of film digitization on conventional flatbed scanner and image processing with the ImageJ program was tested. The obtained calibration curve for this type of film was presented. The skin dose distributions for several interventional studies obtained with radiochromic films were presented. The measured value of the maximum absorbed dose in the skin for four of the fourteen analyzed procedures exceeded the threshold value of the absorbed dose for the occurrence of skin erythema in 2 Gy. The highest values of the maximum absorbed dose in the skin were obtained for the coronary angioplasty – 3.2 Gy and for the procedure of embolization of the uterine arteries – 2.9 Gy

Update of the federal governmental statistical surveillance form № 3-DOZ: “Data on patient doses from medical X-ray examinations”— Part 2 (FORM completion Recommendations)

The form of federal governmental statistical surveillance № 3-DOZ, titled “Data on patient doses from medical X-ray examinations,” has changed significantly by the order of Rosstat N 880. In particular, the structure of the form’s has been revised: studies involving high doses were dedicated from the rest; the section on radionuclide diagnostics has been redesigned; the information on the levels of patient exposure when using individual radionuclides and in hybrid studies have been displayed; information on the number of radiological studies and collective doses for pediatric patients have been introduced; and the number of studies for which typical (average) effective doses of patients are presented has been reduced. The structure of the updated form № 3-DOZ is presented within the framework of this work. In this article, recommendations for filling out № 3-DOZ have been developed in order to increase the reliability of the data provided and reduce the number of procedural errors. This work is a continuation of the article Vodovatov A.V., Chipiga L.A., Bratilova A.A., Druzhinina P.S., Shatskiy I.G., Petryakova A.V., Sarycheva S.S., Biblin A.M., Akhmatdinov R.R., Kapyrina Yu.N., Soldatov I.V., Puzyrev V.G., and Ryzhov S.A. “Update of the federal governmental statistical surveillance form № 3-DOZ “Data on patient doses from medical X-ray examinations”. Perquisites for the update, published in the journal Radiatsionnaya Gygiena (2023. Vol. 16, N 2. P. 126–136. DOI: https://doi.org/10.21514/1998-426X-2023-16-2-126-136)