Figure 5
Image of a lung phantom of 63–75 µm-diameter solid glass spheres in air imaged at 30 keV, R2 = 1 m, 5 mm PSW, hutch 2B, with (a) CB = 0 and (b) CB = 1.5. It can be seen that illumination in the horizontal direction is increased with an increase in CB, indicating that varying the CB affects not only the vertical effective source size but also the horizontal. |