Assessment Of Whole Body, Skin and Eye Lens Doses of the Interventional Radiologists At Selected Hospitals in Iran

2021 ◽  
Author(s):  
Z Danaei ◽  
S M Hosseini Pooya ◽  
E Jazayeri Gharehbagh ◽  
S Baradaran
Keyword(s):  
The Body ◽  
Clinical Staff ◽  
Whole Body ◽  
Eye Lens ◽  
Dose Equivalent ◽  
Annual Dose ◽  
Occupational Groups ◽  
Lead Apron ◽  
Eye Lens Dose ◽  
Measured Dose

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.

The value of protective head cap and glasses in neurointerventional radiology

2015 ◽  
Vol 8 (7) ◽  
pp. 736-740 ◽  
Author(s):  
Marta Sans Merce ◽  
Amine M Korchi ◽  
Lisa Kobzeva ◽  
Jérôme Damet ◽  
Gorislav Erceg ◽  
...  
Keyword(s):  
Effective Dose ◽  
Correlation Coefficients ◽  
Whole Body ◽  
Eye Lens ◽  
Annual Dose ◽  
Eye Lens Dose ◽  
Occupational Dose ◽  
Protective Eyewear ◽  
The Mean ◽  
Area Product

BackgroundProtection of the head and eyes of the neurointerventional radiologist is a growing concern, especially after recent reports on the incidence of brain cancer among these personnel, and the revision of dose limits to the eye lens. The goal of this study was to determine typical occupational dose levels and to evaluate the efficiency of non-routine radiation protective gear (protective eyewear and cap). Experimental correlations between the dosimetric records of each measurement point and kerma area product (KAP), and between whole body doses and eye lens doses were investigated.MethodsMeasurements were taken using thermoluminescent dosimeters placed in plastic bags and worn by the staff at different places. To evaluate the effective dose, whole body dosimeters (over and under the lead apron) were used.ResultsThe mean annual effective dose was estimated at 0.4 mSv. Annual eye lens exposure was estimated at 17 mSv when using a ceiling shield but without protective glasses. The protective glasses reduced the eye lens dose by a factor of 2.73. The mean annual dose to the brain was 12 mSv; no major reduction was observed when using the cap. The higher correlation coefficients with KAP were found for the dosimeters positioned between the eyes (R2=0.84) and above the apron, and between the eye lens (R2=0.85) and the whole body.ConclusionsUnder the specific conditions of this study, the limits currently applicable were respected. If a new eye lens dose limit is introduced, our results indicate it could be difficult to comply with, without introducing additional protective eyewear.

CORRELATION OF EYE LENS DOSES AND PERSONAL DOSE EQUIVALENT MEASURED ON THE ARM OF INTERVENTIONAL CARDIOLOGISTS FOR A RETROSPECTIVE ASSESSMENT OF DOSES TO OPERATORS’ EYE LENS

2020 ◽  
Vol 189 (3) ◽  
pp. 271-278
Author(s):  
Joanna Domienik-Andrzejewska ◽  
Marcin Brodecki ◽  
Marek Zmyślony
Keyword(s):  
Threshold Dose ◽  
Whole Body ◽  
Eye Lens ◽  
Dose Equivalent ◽  
Retrospective Assessment ◽  
Time Period ◽  
Conversion Coefficients ◽  
Left And Right ◽  
Lens Opacities

Abstract Coefficients converting the readings of the whole body dosemeter worn on the left arm to eye lens doses were determined by analysing the correlations between Hp(10) and Hp(3) values. Doses were measured on a phantom for specific C-arm projections typically used during CA/PCI procedures. In order to estimate the cumulative eye lens doses, conversion coefficients were then applied to the dose records of interventional cardiologists collected in the database of dosimetry service between the years 1995 and 2009. The Hp(10) to Hp(3) conversion coefficients are 0.29 (CV = 34%) and 0.17 (CV = 42%) for left and right eye lens, respectively. However, they can vary from one laboratory to another depending on working technique. From among 61 interventional cardiologists, none exceeded the threshold dose of 0.5 Gy for eye lens opacities. However, 44% of interventional cardiologists were likely to exceed the annual limit of 20 mSv for the most exposed eye at least once in the analysed time period.

Assessment of the occupational eye lens dose for clinical staff in interventional radiology, cardiology and neuroradiology

2017 ◽  
Vol 37 (1) ◽  
pp. 145-159 ◽  
Author(s):  
Artur Omar ◽  
Nils Kadesjö ◽  
Charlotta Palmgren ◽  
Maria Marteinsdottir ◽  
Tony Segerdahl ◽  
...  
Keyword(s):  
Interventional Radiology ◽  
Clinical Staff ◽  
Eye Lens ◽  
Eye Lens Dose

Eye lens dose correlations with personal dose equivalent and patient exposure in paediatric interventional cardiology performed with a fluoroscopic biplane system

2017 ◽  
Vol 36 ◽  
pp. 81-90 ◽  
Author(s):  
L. Alejo ◽  
C. Koren ◽  
E. Corredoira ◽  
F. Sánchez ◽  
J. Bayón ◽  
...  
Keyword(s):  
Interventional Cardiology ◽  
Eye Lens ◽  
Dose Equivalent ◽  
Patient Exposure ◽  
Eye Lens Dose

scholarly journals Utilizing Monte Carlo simulations in estimation of occupational eye lens dose based on whole body dosemeter in interventional cardiology and radiology

2018 ◽  
Vol 33 (4) ◽  
pp. 375-379
Author(s):  
Predrag Bozovic ◽  
Olivera Ciraj-Bjelac ◽  
Jelena Stankovic-Petrovic ◽  
Danijela Arandjic ◽  
Sandra Ceklic
Keyword(s):  
Monte Carlo ◽  
Interventional Cardiology ◽  
Dose Assessment ◽  
Whole Body ◽  
Eye Lens ◽  
Dose Limit ◽  
Eye Lens Dose ◽  
Mcnpx Code ◽  
Center Position ◽  
High Doses

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.

A correlation study of eye lens dose and personal dose equivalent for interventional cardiologists

2013 ◽  
Vol 157 (4) ◽  
pp. 561-569 ◽  
Author(s):  
J. Farah ◽  
L. Struelens ◽  
J. Dabin ◽  
C. Koukorava ◽  
L. Donadille ◽  
...  
Keyword(s):  
Correlation Study ◽  
Eye Lens ◽  
Dose Equivalent ◽  
Eye Lens Dose

OCCUPATIONAL RADIATION EXPOSURE OF THE EYE IN NEUROVASCULAR INTERVENTIONAL PHYSICIAN

2019 ◽  
Vol 185 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Mamoru Kato ◽  
Koichi Chida ◽  
Takato Ishida ◽  
Hideto Toyoshima ◽  
Yasuyuki Yoshida ◽  
...  
Keyword(s):  
Interventional Radiology ◽  
Radiation Protection ◽  
Eye Lens ◽  
Digital Subtraction ◽  
Dose Equivalent ◽  
Correct Evaluation ◽  
Occupational Radiation Exposure ◽  
Actual Measurement ◽  
Eye Lens Dose ◽  
Occupational Radiation

Abstract Neurovascular interventional radiology (neuro-IR) procedures tend to require an extended fluoroscopic exposure time and repeated digital subtraction angiography. To evaluate the actual measurement of eye lens dose using a direct eye dosemeter in neuro-IR physicians is important. Direct dosimetry using the DOSIRIS™ (IRSN, France) [3 mm dose equivalent, Hp(3)] was performed on 86 cases. Additionally, a neck personal dosemeter (glass badge) [0.07 mm dose equivalent, Hp(0.07)] was worn outside the protective apron to the left of the neck. The average doses per case of neuro-IR physicians were 0.04 mSv/case and 0.02 mSv/case, outside and inside the radiation protection glasses, respectively. The protective effect of radiation protection glasses was approximately 60%. The physician eye lens dose tended to be overestimated by the neck glass badge measurements. A correct evaluation of the lens dose [Hp(3)] using an eye dosemeter such as DOSIRIS™ is needed for neuro-IR physicians.

Staff dose evaluation by application of radiation protection during endoscopic retrograde cholangiopancreatography (ERCP) procedures performed with a mobile C-arm

2020 ◽  
pp. 028418512098328
Author(s):  
Andreas Österlund ◽  
Wilfried Drohn ◽  
Herbert Hoedlmoser ◽  
Matthias Greiter ◽  
Martin Schmid ◽  
...  
Keyword(s):  
Endoscopic Retrograde Cholangiopancreatography ◽  
Lower Extremities ◽  
The Body ◽  
Shielding Effect ◽  
Whole Body ◽  
Eye Lens ◽  
Lower Body ◽  
Radiation Shield ◽  
Endoscopic Retrograde ◽  
Phantom Measurements

Background The radiation dose to staff performing endoscopic retrograde cholangiopancreatography (ERCP) is not negligible. Purpose To evaluate the shielding effect of a table-suspended lower-body radiation shield for the positions in the room occupied by the operator, assisting nurse, and anesthesiologist, used during ERCP procedures with a mobile C-arm. Material and Methods Eye lens dose, whole body dose, and extremity dose were measured with and without a table-suspended lower-body radiation shield in a phantom model and in clinical routine work. The effect of the shield was evaluated for each scenario and compared, and a projection was made for when shielding should be required from a regulatory point of view. Results In the phantom measurements, the shield provided significant shielding effects on the body and lower extremities for the operator but no significant shielding of the eye lens. The shielding effect for the assisting nurse was limited to the lower extremity. The clinical measurements yielded the same general result as the phantom measurements, with the major difference that the shield provided no significant reduction in the whole-body dose to the operator. Conclusion The table-suspended shield has a significant shielding effect for the lower extremities of the operator and assisting nurse. For annual dose–area product values >300,000 cGycm2, the protection of the operator should be reinforced with a ceiling-suspended shield to avoid doses to the eye lens and body in excess of regulatory dose restrictions.

Applicability of a Commercially Available Active Extremity Dose-Rate Meter to Eye Lens Dose Monitoring

2021 ◽  
Author(s):  
Munehiko Kowatari ◽  
Hayo Zutz ◽  
Oliver Hupe
Keyword(s):  
Complete Characterization ◽  
Low Energy ◽  
Eye Lens ◽  
Dose Equivalent ◽  
Energy Photon ◽  
Eye Lens Dose ◽  
Dose Monitoring ◽  
Area Monitoring ◽  
Additional Monitoring

Abstract A commercially available active extremity dosemeter is a promising candidate for medical staff aid individual monitoring of the eye lens. We investigated the applicability of the newly developed active extremity dosemeter, which uses a low-energy photon probe, to eye lens dose monitoring by performing a complete characterization of the dosemeters. Performance tests revealed that the active extremity dosemeter would overestimate personal dose equivalent, Hp(3), when the probe is worn close to the lens of the eye of a medial worker without any improvement in the response. Introducing an appropriate filter into the probe for low-energy photon has proven to improve the response. The dosemeter then satisfies the criteria of the personal dosemeter for eye lens dosimetry and can be applicable to individual monitoring of eye lens dose. This article also discusses the applicability of the dosemeter to area monitoring for decision making regarding additional monitoring of the eye lens and the extremities.

PERFORMANCE OF THE INSTADOSETM DOSEMETER FOR INTERVENTIONAL RADIOLOGY AND CARDIOLOGY APPLICATION

2018 ◽  
Vol 183 (4) ◽  
pp. 522-528 ◽  
Author(s):  
W J Garzón ◽  
H Khoury ◽  
S A M Ovalle ◽  
R B Medeiros
Keyword(s):  
Interventional Radiology ◽  
Medical Staff ◽  
Radiation Dosimetry ◽  
Whole Body ◽  
Eye Lens ◽  
X Ray ◽  
Eye Lens Dose ◽  
Clinical Conditions

Abstract The aim of this article was to verify the performance of the Mirion InstadoseTM dosemeter under clinical conditions and to compare its response in typical X-ray fields used during interventional and cardiology procedures with the TLD-100, usually used for radiation dosimetry. It was also objective of this study to verify the feasibility of using the InstadoseTM dosemeter response at the chest level for estimation of occupational eye lens dose in cardiology and interventional radiology. Initially the response of the dosemeter was tested using continuous X-ray beams and the results showed that the Instadose dosemeter present a satisfactory behavior of the most important dosimetric properties based on the tests as described in the IEC 62387 standard. The measurements performed in clinical conditions showed that the InstadoseTM dosemeter response was comparable to that of TL dosemeters used in interventional radiology and cardiology procedures and there is a correlation between the eye lens doses and the chest doses measured with the InstadoseTM. Based on the results obtained, we recommend the use of the InstadoseTM dosemeter for purposes of occupational whole-body monitoring of medical staff in interventional radiology and cardiology procedures.

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