Biomedical Technology Resources
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Supported Platforms

Linux, Mac OSX, Windows

Supported Data Formats

ASL values of a single voxel, Matlab

Resource Description

The FourPhasePerf program is a Matlab program designed to obtain quantitative measures of cerebral blood flow from arterial spin labeling (ASL) MRI data.  It calculates hemodynamic parameters based on a four phase ASL model.  In this dual-compartment distributed perfusion model, the bolus arrival time is decomposed into transit delays through large arteries and delays through smaller arteries and arterioles, expressed as arterial-arteriole transit time (aaTT), before the spin labels reach the capillary bed and perfusion into brain tissue.  Program author: Dr. Norbert Schuff.