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PRELIMINARY STAFF DOSE ASSESSMENT FOR COMMON FLUOROSCOPY GUIDED PROCEDURES AT KORLE-BU TEACHING HOSPITAL, ACCRA,
R N Nana1,2, M Boadu1,3, M N Moyo2,4
1School of Nuclear and Allied Sciences, University of Ghana, PO Box AE 1, Atomic, Accra, Ghana.
Insights
Preliminary radiation dose study shows effective doses for radiologists and cardiologists are within safe limits. However, eye lens doses for these medical professionals exceeded acceptable limits, necessitating protective measures.
Area of Science:
- Medical Physics
- Occupational Health
- Radiology
Background:
- Healthcare professionals, including radiologists and cardiologists, are exposed to ionizing radiation during medical procedures.
- Monitoring occupational radiation doses is crucial for ensuring worker safety and compliance with regulatory limits.
- Previous studies have indicated potential risks associated with cumulative radiation exposure in medical settings.
Purpose of the Study:
- To assess the effective and eye lens radiation doses received by radiologists and cardiologists.
- To compare the estimated doses against established International Commission on Radiological Protection (ICRP) limits.
- To recommend measures for optimizing radiation protection in these medical specialties.
Main Methods:
- A 3-month dosimetry study was conducted involving six radiologists and four cardiologists.
- Electronic dosemeters were utilized, placed under and over lead aprons for accurate measurement.
- Monthly effective doses and eye lens doses were calculated based on the collected data.
Main Results:
- Estimated monthly effective doses for cardiologists ranged from 0.01-0.07 mSv, and for radiologists, 0.03-0.14 mSv.
- Estimated monthly eye lens doses for cardiologists were 0.15-0.30 mSv, and for radiologists, 0.53-3.39 mSv.
- While effective doses remained below the ICRP limit of 1.67 mSv/month, the upper range of eye lens doses exceeded the ICRP acceptable limit by a factor of two.
Conclusions:
- Effective radiation doses for the studied medical professionals are within acceptable occupational limits.
- A significant concern exists regarding eye lens radiation exposure, with levels exceeding ICRP recommendations.
- Consistent use of protective eyewear and regular eye lens dose monitoring are essential for dose optimization and safeguarding healthcare workers.
Abstract:
Preliminary studies on effective and eye lens doses of six Radiologists, four Cardiologists have been conducted for a period of 3 months. Electronic dosemeters positioned under and over lead apron of staff were used for the dosimetry. The estimated effective dose per month to Cardiologist and Radiologist were 0.01-0.07 mSv and 0.03-0.14 mSv, respectively. The estimated eye lens doses per month to Cardiologists and Radiologists were also 0.15-0.30 mSv and 0.53-3.39 mSv, respectively. The effective doses per month to staff were below the ICRP acceptable limit of 1.67 mSv/month but the upper limit of the range of estimated eye lens dose exceeded the ICRP acceptable limit by a factor of 2. Regular use of protective goggles and consistent eye lens dose monitoring is encouraged at the hospital for dose optimization.
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