Neuro Image Research and Analysis Laboratory BSD License Yes University of North Carolina at Chapel Hill NITRC Fluid Registration and Atlas Toolkit Linux Yes C++ Marc Niethammer FRAT is no longer supported. It has been superseeded by the CALATK, available here http://www.calatk.org FRAT provides c++ libraries and applications for performing fluid registration based operations on 2D and 3D images. The registration method is based on the large displacement diffeomorphic mapping (LDDM) registration method and implements discretized fluid registration. This registration method is then applied to time series analysis, cross-sectional atlas building, and longitudinal atlas building. The individual tool components are: LDDM: Fluid registration between two images. TimeSeries: Time series analysis of longitudinal data for a single subject. AtlasBuilder: Cross-sectional atlas building for a population of images. LongitudinalAtlasBuilder: Longitudinal atlas building for a population of subjects, each with a longitudinal data set. FRATUtils: A collection of utility functions for working with volumes and time series files Fluid Registration and Atlas Toolkit Atlas Application, Image-to-Image, Nonlinear Warp, 2 - Pre-Alpha, MR, Console (Text Based), Developers, End Users, BSD License, English, Linux, C++, Nrrd, Other Format, Multiple Sclerosis, Schizophrenia, Hypertension, Depression, Alzheimer Disease, Stroke, Brain Injuries, Hydrocephalus http://www.nitrc.org/projects/frat/, http://www.nitrc.org/projects/frat/ mn@cs.unc.edu