Iterative Image Reconstruction for Limited-Angle CT Using Optimized Initial Image

Figure 10

Different initial images and iterative reconstruction results of real head phantom: (a) reference image, (b) initial image by FBP, (c) initial image by proposed algorithm, (d) result from POCS-TV with initial zero image, (e) result from POCS-TV with initial FBP image, and (f) result from POCS-TV with proposed initial image.

(a)

(b)

(c)

(d)

(e)

(f)