Hi, I would like to know what the coordinates of a certain point become after applying a transformation with flirt. Is it just a simple as applying the matrix-vector multiplication or is anything else involved? Thanks, -- Erik-Jan Vlieger Academic Medical Center Dept. of Radiology, G1-209 P.O. Box 22660 1100 DD Amsterdam The Netherlands email: [log in to unmask] Phone: +31 20 5664975 Fax: +31 20 5669753