Research Article

FDK-Type Algorithms with No Backprojection Weight for Circular and Helical Scan CT

Figure 5

Reconstructed slices at of Shepp-Logan low-contrast phantom using HFDKW-1 formula for (a) short scan segment on a helical trajectory. (b) Less than short scan segment. The value of pitch used is m. Display window is .
969432.fig.005a
(a)
969432.fig.005b
(b)