Topics

A study of the underestimation of eye lens dose with current eye dosemeters for interventional clinicians wearing lead glasses.

07:00 EST 8th November 2019 | BioPortfolio

Summary of "A study of the underestimation of eye lens dose with current eye dosemeters for interventional clinicians wearing lead glasses."

The reduction in the occupational dose limit of the eye lens has created the need for optimizing eye protection and dose assessment, in particular for interventional clinicians. Lead glasses are one of the protection tools for shielding the eyes, but assessing the eye lens dose when these are in place remains challenging. In this study, we evaluated the impact of the position of Hp(3) dosemeters on the estimated eye lens dose when lead glasses are used in interventional settings. Using the Monte Carlo method (MCNPX), an interventional cardiology setup was simulated for two models of lead glasses, five beam projections and two patient access routes. Hp(3) dosemeters were placed at several positions on the operator and the obtained dose was compared to the dose to the sensitive part of the eye lens (Hlens). Furthermore, to reproduce an experimental setup, a reference dosemeter, Hp(3)ref, was placed on the surface of the eye. The dose measured by Hp(3)ref was, on average, only 60% of Hlens. Dosemeters placed on the glasses, under their shielding, underestimated Hlens for all parameters considered, by from 10% up to 90%. Conversely, dosemeters placed on the head or on the glasses, over their shielding, overestimated Hlens, on average, up to 60%. The presence or lack of side shielding in lead glasses affected mostly dosemeters placed on the forehead, at the left side. Results suggest that both use of a correction factor of 0.5 to account for the presence of lead glasses in doses measured outside their shielding and placing an eye lens dosemeter immediately beneath the lenses of lead glasses may lead to underestimation of the eye lens dose. Most suitable positions for eye lens dose assessment were on the skin, unshielded by the glasses or close to the eye, with no correction to the dose measured.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of radiological protection : official journal of the Society for Radiological Protection
ISSN: 1361-6498
Pages:

Links

DeepDyve research library

PubMed Articles [24219 Associated PubMed Articles listed on BioPortfolio]

ESTIMATION OF Hp(3) TO THE EYE LENS OF INTERVENTIONAL RADIOLOGISTS-RELATION BETWEEN THE EYE LENS DOSE AND RADIOLOGIST'S HEIGHT.

The aim of the study was to estimate occupational radiation dose to the eye lens of radiologists and the dose reduction ratio of lead glasses during interventional radiology. Three interventional radi...

Relative response of dosimeters to variations in scattered X-ray energy spectra encountered in interventional radiology.

The new lower eye lens dose limit is of relevance in interventional radiology, where higher dose procedures result in increased scattered radiation to staff. The eye lens dose may be monitored using t...

Influences of Operator Head Posture and Protective Eyewear on Eye Lens Doses in Interventional Radiology: a Monte Carlo Study.

To quantify the effects of operator head posture and different types of protective eyewear on the eye lens dose to operators in interventional radiology (IR).

OCCUPATIONAL RADIATION EXPOSURE DOSE OF THE EYE IN DEPARTMENT OF CARDIAC ARRHYTHMIA PHYSICIAN.

Interventional radiology (IR) procedures tend to be complex, which delivers high radiation exposure to patient. In the present study, we measured the radiation exposure dose [Hp(3)] in the eye using a...

Ionising radiation and lens opacities in interventional physicians: results of a German pilot study.

We assessed the feasibility of an epidemiological study on the risk of radiation-related lens opacities among interventional physicians in Germany. In a regional multi-centre pilot study associated wi...

Clinical Trials [14336 Associated Clinical Trials listed on BioPortfolio]

Risk of Radiation-induced Cataracts Among Interventional Cardiology Staff

The goal of the present study is to evaluate the prevalence of radiation-associated lens opacities among interventional cardiology staff members (such as physicians, technicians, and nurse...

The Impact of Soft Contact Lens Attributes on Symptoms Associated With Digital Eye Strain in Symptomatic Soft Contact Lens Wearers

Despite its prevalence, the ocular causes of eye fatigue or unknown and may be related to the cornea/contact lens surface, the accommodative system, the convergence system, overall postura...

Objective Measurements of Lens Opacification After Intravitreal Injections

The main hypothesis is the opacification of the lens would be increase by the IVT. The opacification of the lens can be objectived by : - the objective scatter index (OSI) on the OQAS...

Occupational Cataracts and Lens Opacities in Interventional Cardiology : the O'CLOC Study

The purpose of this study is to test the existence of an increased risk of cataracts among interventional cardiologists as compared to cardiologists not exposed to X-rays.

Effect of Contact Lens With Alginic Acid in Dry Eye Patients

Contact lens induced dry eyes leads to lens intolerance and discontinuation. Incidence of dry eye in contact lens wearer is significantly higher in Asian population compared to other ethni...

Medical and Biotech [MESH] Definitions

A work that reports on the results of a clinical study in which participants may receive diagnostic, therapeutic, or other types of interventions, but the investigator does not assign participants to specific interventions (as in an interventional study).

Minimally invasive procedures, diagnostic or therapeutic, performed within the BLOOD VESSELS. They may be perfomed via ANGIOSCOPY; INTERVENTIONAL MAGNETIC RESONANCE IMAGING; INTERVENTIONAL RADIOGRAPHY; or INTERVENTIONAL ULTRASONOGRAPHY.

The highest dose of a biologically active agent given during a chronic study that will not reduce longevity from effects other than carcinogenicity. (from Lewis Dictionary of Toxicology, 1st ed)

Insertion of an artificial lens to replace the natural CRYSTALLINE LENS after CATARACT EXTRACTION or to supplement the natural lens which is left in place.

The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population.

Quick Search


DeepDyve research library

Relevant Topics

Ophthalmology
Ophthalmology is the branch of medicine that is devoted to the study and treatment of eye diseases. As well as mild visual defects correctable by lenses, ophthalmology is concerned with glaucoma, uveitis and other serious conditions affecting the eye, ...

Cardiology
Cardiology is a specialty of internal medicine.  Cardiac electrophysiology : Study of the electrical properties and conduction diseases of the heart. Echocardiography : The use of ultrasound to study the mechanical function/physics of the h...


Searches Linking to this Article