Circle Plus Partial Helical Scan Scheme for a Flat Panel Detector-Based Cone Beam Breast X-Ray CT

Figure 7

Central sagittal image comparison between MFDK, phantom, and circle plus partial helical term with different sampling intervals. (a) Circular FDK reconstruction; (b) circular Hui’s term; (c) MFDK reconstruction (circle FDK + Hui term); (d) partial helical reconstruction (32 X-ray shots during helix scan); (e) MFDK + Helix reconstruction (32 shots for helical scan); (f) partial helical reconstruction (64 X-ray shots during helix scan); (g) MFDK + Helix reconstruction (64 shots for helical scan); (h) phantom image of the same sagittal slice.

(a) FDK

(b) Hui term

(c) MFDK

(d) Helix recon (32 shots)

(e) MFDK + Helix (32 shots)

(f) Helix recon (64 shots)

(g) MFDK + Helix (64 shots)

(h) Phantom image