Skin dose assessment in interventional radiology

Abstract

For long, complex procedures in interventional radiology (IR) or in interventional cardiology (IC), the skin dose can be high and induce skin injuries. To improve patient follow-up, it is essential to measure and locate the peak skin dose (PSD). PSD can be measured using dosimeters or computed by skin dose calculation software solutions. Recently, a study was published (e.g. Malchair F et al Phys Med 2020; 80:75-83) listing all the software solutions developed and available and compared them in operation as regards accuracy of the calculated PSD and generated dose map. Similarities and differences exist between these different software packages, which are discussed here. The accuracy of PSD calculated on phantom studies with these software solutions are within ± 25% and poorer in patient studies. Improvements are therefore required for manufacturers of both software and IR systems. The medical physicists also have an important role to play in setting up and monitoring the dose in these software solutions to ensure the accuracy of the calculated PSD.