OCCUPATIONAL EYE LENS DOSE ESTIMATED USING WHOLE-BODY DOSEMETER IN INTERVENTIONAL CARDIOLOGY AND RADIOLOGY: A MONTE CARLO STUDY

2019 ◽  
Vol 185 (2) ◽  
pp. 135-142 ◽  
Author(s):  
Predrag Božović ◽  
Olivera Ciraj-Bjelac ◽  
Jelena Stanković Petrović

Abstract Medical personnel performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. Reduction of the eye lens dose limit made its assessment in the interventional procedures one of the most challenging topics. The objective of this work is to assess eye lens doses based on the whole-body doses using methods of computational dosimetry. Assessment included different C-arm orientations (PA, LAO and RAO), tube voltages (80 –110 kV) and efficiency of different combinations of protective equipment used in interventional procedures. Center position at the height of the thyroid gives best estimate of eye lens dose, with spreads of 11% (13%), 13% (17%) and 14% (13%) for the left (right) eye lens. The conversion factors of 1.03 (0.83), 1.28 (1.06) and 1.36 (1.06) to convert whole body to eye lens dose were derived for positions of first operator, nurse and radiographer, respectively. The eye lens dose reduction factors for different combinations of applied protective equipment are 178, 5 and 6, respectively.

2018 ◽  
Vol 33 (4) ◽  
pp. 375-379
Author(s):  
Predrag Bozovic ◽  
Olivera Ciraj-Bjelac ◽  
Jelena Stankovic-Petrovic ◽  
Danijela Arandjic ◽  
Sandra Ceklic

Medical staff performing interventional procedures in cardiology and radiology is considered to be a professional group exposed to high doses of ionizing radiation. With new epidemiological evidences and recently reduced eye lens dose limit, dose assessment to the lens of the eye, in the interventional cardiology, has become one of the most challenging research topics. This paper presents results of the eye lens dose assessment in interventional cardiology obtained by means of the computational dosimetry. Since placing and wearing the dedicated eye lens dosimeter is encumbering for the staff, Monte Carlo simulation provides an accurate and efficient method for obtaining an indication of doses to the eye lenses. Eye lens doses were estimated for three typical beam projections (PA, LAO, and RAO) and tube voltages ranging from 80 kV to 110 kV, with different protective equipment setups, for the first operator position. Simulations were carried out using MCNPX code. Results revealed that a whole body dosimeter worn at the thyroid center position gives the best estimate of the eye lens dose with a spread from 11 % to 18 % for the left eye. Corresponding average conversion coefficient from whole body to the eye lens dose is estimated to be 0.18.


2019 ◽  
Vol 68 ◽  
pp. 47-51 ◽  
Author(s):  
Jeannie Hsiu Ding Wong ◽  
Lydia Esther Andrew Anem ◽  
Suzet Tan ◽  
Sock Keow Tan ◽  
Kwan Hoong Ng

2014 ◽  
Vol 163 (2) ◽  
pp. 181-187 ◽  
Author(s):  
Y. Kong ◽  
L. Struelens ◽  
F. Vanhavere ◽  
C. S. Vargas ◽  
W. Schoonjans ◽  
...  

2014 ◽  
Vol 164 (1-2) ◽  
pp. 79-83 ◽  
Author(s):  
S. Principi ◽  
M. Ginjaume ◽  
M. A. Duch ◽  
R. M. Sanchez ◽  
J. M. Fernandez ◽  
...  

Author(s):  
Z Danaei ◽  
S M Hosseini Pooya ◽  
E Jazayeri Gharehbagh ◽  
S Baradaran

Abstract High radiation doses to the body may lead to the stochastic/deterministic effects of ionizing radiation on the critical organs as well as causing the cataract in eye lens of the clinical staff in interventional radiology. In this study, the received doses of the eyes, skin and whole body of 38 clinical staff including physicians, residents, nurses and radiotechnologists in cardiac angiography departments in three selected hospitals were assessed using personal dosemeters during two bimonthly dosimetry periods. Moreover, the correlation coefficients among the measured dose components including eye lens dose, skin dose and whole body dose equivalent in both area of under and over their lead-apron were calculated for all these occupational groups. The results show that the occupational annual dose values of the clinical staff are below the annual dose limits recommended by International Commission on Radiation Protection. Furthermore, among the measured dose components, the highest correlation coefficient value was obtained between the eye lens dose and personal dose equivalent measured over the lead apron for all the occupational groups.


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