Figure 2.

[(a)–(f)] Graphs showing the relationship between the FOM and kVp for both Mo–Mo and W–Rh target∕filter combinations for 100% adipose [(a) and (d)], 50% adipose∕50% glandular [(b) and (e)], and 100% glandular [(c) and (f)]. The FOM, defined by the ratio of SdNR²∕MGD, was calculated for both mass [(a)–(c)] and calcification [(d)–(f)] lesions, where SdNR is the signal-difference-to-noise ratio and MGD is the mean glandular dose. The solid gray circles represent the previously established clinical technique based on Mo–Mo and screen∕film, shown here for comparison purposes.