In this paper we show that annular source and dynamic coherent phase contrast viewing systems are equivalent. Experimental results which demonstrate the equivalence by showing the bandwidth doubling are included. The additional noise reduction and the continuous tone capability of these systems is also shown experimentally.
D. J. Cronin,
J. B. DeVelis,
G. O. Reynolds,
"Equivalence of Annular Source and Dynamic Coherent Phase Contrast Viewing Systems," Optical Engineering 15(3), 153276 (1 June 1976). https://doi.org/10.1117/12.7971966