Figure 1. Double histogram of dose–area product (DAP) values for conventional film–screen radiography (FSR) and fluoroscopy guided positioning (FGP). The best line of fit shows that the peak for FGP (solid line) is higher and to the left (lower dose) of the peak of the FSR (dotted line).
Figure 2. Median dose–area product (DAP) value for each study site. Sites A–D used the conventional film–screen (FSR) technique; sites (E–G) used the fluoroscopy-guided positioning (FGP) technique. The median value for each technique has also been included.
Figure 3. The median screening times illustrated in (a) correlate with the use of freeze-frame in site G, which displays the lowest median screening time of the three units. There is excellent correlation between median screening time and median dose–area product (DAP) values (b), indicating the importance of minimizing screening time.
