Figure 4.
This figure shows the effect of anode spot size on edge enhancement in PCM. The image on the left (and inset line plot through the center row) shows the ideal intensity, with an infinitely small spot size, due to an 80-μm-diameter calcification object in an adapted CLB breast background under a Konika–Minolta system geometry (Ec = 25 keV, E = 25 keV). The middle and right images have been blurred to account for 20 μm and 50 μm anode spot sizes, respectively. Images are displayed in Hounsfield units.