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Does cardiologist- or radiographer-operated fluoroscopy and image acquisition influence optimization of patient radiation exposure during routine coronary angiography?

¹ Department of Cardiology, Papworth Hospital, Cambridgeshire CB8 8RE, ² Scunthorpe General Hospital, Scunthorpe, North Lincolnshire DN15 7BH and ³ Department of Cardiology, Castle Hill Hospital, Cottingham, East Yorkshire HU16 5JQ, UK

View larger version (20K): [in a new window]   Figure 1. Box plot of screening times for individual operators who performed over 20 coronary angiograms. The first four operators were consultants (C1–4), and the remainder registrars in-training (R1–3). The median, 25th and 75th percentiles are shown by the boxes. Error bars are the 10th and 90th percentiles. Individual outliers are shown. Screening times are measured in minutes, therefore log[0] corresponds to 1 min screening time, log[1.0] to 10 min screening time etc.

View larger version (14K): [in a new window]   Figure 2. Analysis of mean screening times of individual cardiologists during independent and radiographer-controlled radiation exposure. —, consultant; - - -, registrar; + + +, mean.

View larger version (14K): [in a new window]   Figure 3. Analysis of mean total dose–area product (DAP) readings of individual cardiologists during independent- and radiographer-controlled radiation exposure. —, consultant; - - -, registrar; + + +, mean.