Demonstration of accuracy and clinical versatility of mutual information for automatic multimodality image fusion using affine and thin-plate spline warped geometric deformations. - Charles R. Meyer; Jennifer L. Boes; Boklye Kim; Peyton H. Bland; Kenneth R. Zasadny; Paul V. Kison; Kenneth Koral; Kirk A. Frey; Richard L. Wahl (Medical Image Anal., 1997)