TABLE I.

Description of peak skin dose calculation methods used in this study.

Description	Information sources	Fluoroscopy	Acquisition	Additional information
Method 1	Patient protocol produced by fluoroscope (reference air kerma, kerma area product, kVp, added filtration); DICOMa header (distance source to patient)	Wholesale, all reference air kerma considered as a whole	Piecemeal, each series considered individually	“Standard” method based on Refs. 12 and 13.
Method 2	Patient protocol produced by fluoroscope (reference air kerma); DICOM header (distance source to patient)	Wholesale, all reference air kerma considered as a whole	Piecemeal, each series considered individually	Single backscatter factor of 1.4 used; source-to-patient distance equal to patient table height for last acquisition series.
Method 3	Patient protocol produced by fluoroscope (reference air kerma)	Wholesale, all reference air kerma considered as a whole	Piecemeal, each series considered individually	Single backscatter factor of 1.4 used; location of interventional reference point used for source-to-patient distance.
Method 4	RDSR	Piecemeal, each series considered individually	Piecemeal, each series considered individually	Used RDSR as data source.

^aDICOM = Digital imaging and communications in medicine.