Towards the estimation of the scattered energy spectra reaching the head of the medical staff during interventional radiology: A Monte Carlo simulation study

International Conference on Bio-Medical Instrumentation and related Engineering and Physical Sciences

物理学;医药卫生

Zagorska, A.^1 ; Bliznakova, K.^2 ; Buchakliev, Z.^3

Department of Medical Physics and Biophysics, Medical University, 1 G. Sofiisky str, Sofia

1431, Bulgaria^1

Department of Electronic Engineering and Microelectronics, Technical University of Varna, Bulgaria^2

SSDL-Sofia, National Centre of Radiobiology and Radiation Protection, 3 G. Sofiisky str, Sofia

1431, Bulgaria^3

关键词: Acquisition geometry;    Computational phantom;    Effective energy;    International commission on radiological protections;    Interventional radiology;    Occupational exposure;    Protective equipment;    Scattered radiations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/637/1/012036/pdf
DOI  :  10.1088/1742-6596/637/1/012036

学科分类：卫生学

来源: IOP

【 摘 要 】

In 2012, the International Commission on Radiological Protection has recommended a reduction of the dose limits to the eye lens for occupational exposure. Recent studies showed that in interventional rooms is possible to reach these limits especially without using protective equipment. The aim of this study was to calculate the scattered energy spectra distribution at the level of the operator's head. For this purpose, an in-house developed Monte Carlo-based computer application was used to design computational phantoms (patient and operator), the acquisition geometry as well as to simulate the photon transport through the designed system. The initial spectra from 70 kV tube voltage and 8 different filtrations were calculated according to the IPEM Report 78. An experimental study was carried out to verify the results from the simulations. The calculated scattered radiation distributions were compared to the initial incident on the patient spectra. Results showed that there is no large difference between the effective energies of the scattered spectra registered in front of the operator's head obtained from simulations of all 8 incident spectra. The results from the experimental study agreed well to simulations as well.