The current status of eye lens dose measurement in interventional cardiology personnel in Thailand

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.

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Influence of dosemeter position for the assessment of eye lens dose during interventional cardiology

Radiation Protection Dosimetry ◽

10.1093/rpd/ncu359 ◽

2014 ◽

Vol 164 (1-2) ◽

pp. 79-83 ◽

Cited By ~ 23

Author(s):

S. Principi ◽

M. Ginjaume ◽

M. A. Duch ◽

R. M. Sanchez ◽

J. M. Fernandez ◽

...

Keyword(s):

Interventional Cardiology ◽

Eye Lens ◽

Eye Lens Dose

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

Radiation Protection Dosimetry ◽

10.1093/rpd/ncy283 ◽

2019 ◽

Vol 185 (2) ◽

pp. 135-142 ◽

Cited By ~ 2

Author(s):

Predrag Božović ◽

Olivera Ciraj-Bjelac ◽

Jelena Stanković Petrović

Keyword(s):

Interventional Procedures ◽

Monte Carlo Study ◽

Interventional Cardiology ◽

Medical Personnel ◽

Whole Body ◽

Eye Lens ◽

Protective Equipment ◽

Eye Lens Dose ◽

Center Position ◽

High Doses

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.

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