Representative source and processed images used for perfusion calculations. (a) Original fluid-attenuated inversion recovery images. (b) Gray, white and deep gray structure segmentations: gray matter in medium gray, white matter in light gray, thalamus in green, globus pallidus in dark blue, putamen in magenta, caudate in light blue and nucleus accumbens in orange. (c) Cerebral blood flow (CBF) map: low flow in red and high flow in green. (d) Cerebral blood volume map: low volume in red and high volume in green. (e) Mean transit time map: short transit time in green and long transit time in red.