Note: Enhanced 3-D-reconstruction algorithm for C-arm systems suitable for interventional procedures

Two major challenges of 3D reconstruction of C-Arm system:

• low number of projections
• irregular sampling patterns caused by the mechanical instability

Two groups algorithms were applied to solve these problems:

• algebraic method
• analytical method (Feldkamp alg. like)

From 2D fan beam CT, it is known that a partial rotation over 180 degree is sufficient for reconstruction.

Reference:

• Enhanced 3-D-reconstruction algorithm for C-arm systems suitable for interventional procedures. IEEE Trans Med Imaging. 2000 May;19(5):391-403.