Key result
Cardiac fluoroscopy peak skin dose strongly correlates with interventional reference point kerma.
Why the study?
The study aimed to assess peak skin doses during fluoroscopy cardiac procedures and propose a lookup table to enhance dose management.
What is the peak skin dose during fluoroscopy cardiac procedures and does it exceed the threshold for deterministic effects?
Observational
What is the peak skin dose during fluoroscopy cardiac procedures and does it exceed the threshold for deterministic effects?
p-value: p=0.05
Peak skin doses during cardiac fluoroscopy are significantly higher than reported kerma at the interventional reference point, with over a quarter of patients exceeding the 2 Gy threshold for deterministic effects.
May warrant skin-dose monitoring in cardiac fluoroscopy; leaves open prospective validation of kerma thresholds.
This study aimed at assessing patient's peak skin doses (PSD) during fluoroscopy cardiac procedures and proposed a look up table to enhance patient's dose management. Perspex phantom and thermoluminescent dosemeters (TLD) were irradiated for different dose levels with X-ray equipment (Philips Azurion 7). It was found that PSD measures were higher than the kerma at the interventional reference point [K (IRP)] reported with factors 1.55, 1.75 and 2.88 for anterior posterior (AP0o), left anterior oblique (LAO45o) and right anterior oblique (RAO45o), respectively. The equations describing the correlation between the PSD measured kerma area product and cumulative air kerma were found with R-square values of 0.98 and 0.99, respectively. The statistical analysis shows a strong linear correlation between PSD and K (IRP) (P-value = 0.05). It was also found that 27% of the patients population considered in this work, received a skin dose higher than the threshold of deterministic effect of 2 Gy and a look up table with the equation of fitness were proposed to be implemented in the facility for K (IRP) higher than 500 mGy.
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Nana et al. (2023) conducted an observational in Fluoroscopy cardiac procedures. Fluoroscopy cardiac procedures was evaluated on Correlation between peak skin dose (PSD) and kerma at the interventional reference point [K (IRP)] (p=0.05). Peak skin dose during fluoroscopy cardiac procedures strongly correlated with kerma at the interventional reference point (P=0.05), with 27% of patients receiving a skin dose >2 Gy.
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