Design, performance, and applications of a hybrid x-ray/MR system for interventional guidance Proc IEEE Fahrig R, Ganguly A, Lillaney P, Bracken J, Rowlands JR, Wen Z, Yu H, Rieke V, Santos JM, Pauly KB, Sze DY, Frisoli JK, Daniel BL, Pelc NJ 2008; 96: 468-480