A preliminary qualitative example. Sample patient data from a pilot study at SCGH. The images are coronal slices, the grey shapes are the outlines of the kidneys. a) Planned radiotherapy dose distribution (yellow 45 Gy to black 0 Gy) and kidney volumes. b) Baseline (pre-treatment) SPECT intensity distribution (red - high activity, blue – low activity). c) 12-week post treatment SPECT showing reduced perfusion in the high-dose region.