Comparison of Patient Skin Dose Evaluated Using Radiochromic Film and Dose Calculation Software
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To compare, in an interventional radiology setting, peak skin doses (PSDs) delivered as calculated using a dedicated software tool and as measured using radiochromic film. To assess the utility of this dose calculation software tool in routine clinical practice.
Materials and Methods
First, radiochromic films were positioned on the examination table in the back of an adult anthropomorphic phantom to measure PSD, and X-ray examinations were simulated. Then, films were again positioned in the patient’s back for 59 thoracic or abdominopelvic endovascular interventions. The results obtained with the radiochromic films were taken as a reference and were statistically compared with those of the software.
With measured PSDs ranging from 100 to 7000 mGy, the median software–film difference was 8.5%. Lin’s concordance coefficient was 0.98 [0.97; 0.99] (p < 0.001), meaning that concordance was excellent between the two methods. For the films where PSD exceeded 1000 mGy, the median difference in the measured value was 8.7% [− 1.3; 21.1], with a maximum discrepancy of 34%. Lin’s concordance coefficient was 0.98 [0.96; 1] (p < 0.001), meaning that concordance was excellent between the two methods.
Comparison between radiochromic films and the software tool showed that the software is a suitable tool for a simple and reliable estimation of PSD. The software seems to be a good alternative to films, whose use remains complex.
KeywordsInterventional radiology Radiation protection Film dosimetry Radiation injuries Adult anthropomorphic phantom
We thank the interventional radiologists and medical electroradiology technologists at the diagnostic imaging and interventional radiology center of Clermont-Ferrand University Hospital, France.
Compliance with Ethical Standards
Conflict of interest
Florian Magnier, Maxime Poulin, Estelle Osmond, Bruno Pereira, Louis Boyer, Joël Guersen and Lucie Cassagnes declare that they have no conflict of interest. Claire Van Ngoc Ty is employee of the company Esprimed. Guillaume Bonniaud is employee of the company Esprimed. Jeremy Coulot is CEO of the company that develops the product discussed in the manuscript.
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