Measurements of eye lens doses in interventional cardiology using OSL and electronic dosemeters

Abstract

The purpose of this paper is to test the appropriateness of OSL and electronic dosemeters to estimate eye lens doses at interventional cardiology environment. Using TLD as reference detectors, personal dose equivalent was measured in phantoms and during clinical procedures. For phantom measurements, OSL dose values resulted in an average difference of 215 % vs. TLD. Tests carried out with other electronic dosemeters revealed differences up to + + + + +20 % versus TLD. With dosemeters positioned outside the goggles and when TLD doses were >20 mSv, the average difference OSL vs. TLD was 29 %. Eye lens doses of almost 700 mSv per procedure were measured in two cases out of a sample of 33 measurements in individual clinical procedures, thus showing the risk of high exposure to the lenses of the eye when protection rules are not followed. The differences found between OSL and TLD are acceptable for the purpose and range of doses measured in the survey.

Occupational Radiation Exposure During Endovascular Aortic Repair

“…According to this analysis, the FO would exceed the maximum recommended annual eye lens dose after 58-74 FEVAR, 181-222 EVAR, and 333-417 TEVAR procedures, respectively, when not wearing radiation eye protection. However it should be noted, that this is a rough approximation, which may lead to an overestimation of the actual eye lens dose [19,20].…”

Assessment of clinical occupational dose reduction effect of a new interventional cardiology shield for radial access combined with a custom scatter reducing drape

“…However, their badge readings were low to begin with, when compared to cardiologists, and they had a greater variability than the other groups. Although the lower measurement band was 0.1 lSv, this probably represents the lower end of the threshold of detectability of the EPD in practice [21]. Both before and after the placement of the shield, the median cardiologist badge readings were fractions of 10 greater than the other operatives in the laboratory, who usually encounter quite a low staff measurement per procedure.…”

Assessment of clinical occupational dose reduction effect of a new interventional cardiology shield for radial access combined with a scatter reducing drape

“…However, their badge readings were low to begin with, when compared to cardiologists, and they had a greater variability than the other groups. Although the lower measurement band was 0.1 μSv, this probably represents the lower end of the threshold of detectability of the EPD in practice . Both before and after the placement of the shield, the median cardiologist badge readings were fractions of 10 greater than the other operatives in the laboratory, who usually encounter quite a low staff measurement per procedure.…”