aslm is an object orientated toolbox written in MATLAB. It was developed for common tasks associated with the analysis of arterial spin labeling (ASL) and other MRI data. Portions of the code rely heavily on (or are copied from) SPM (http://www.fil.ion.ucl.ac.uk/spm), marsbar (http://marsbar.sourceforge.net, Matthew Brett et al.), and GIFT (Group ICA of fMRI Toolbox v.1.3, http://mialab.mrn.org/software/gift/ )which are also released under the GNU public licence. The ASL subtraction-routine is originally from H.Y. Rao & J.J. Wang, @CFN, UPenn Med, 07/2004.
Thanks for Aslm, it's wonderful!