Robust initialization of 2D-3D image registration using the projection-slice theorem and phase correlation.
van der Bom MJ, Bartels LW, Gounis MJ, Homan R, Timmer J, Viergever MA, Pluim JP. Robust initialization of 2D-3D image registration using the projection-slice theorem and phase correlation. Med Phys. 2010 Apr; 37(4):1884-92.