Hi: Which is faster: i) a target mask ii) a target mask and a waypoint mask ?... The second option is the faster one ?... Sincerely, Gonzalo Rojas Costa Advanced Medical Image Processing Laboratory Department of Radiology Las Condes Clinic Lo Fontecilla 441, Las Condes, Santiago, Chile. Tel: 56-2-2105170 Cel: 56-9-97771785 www.clc.cl El 24-02-2010 21:00, FSL automatic digest system escribió: > Re: Masks in probtrackx