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. Author manuscript; available in PMC: 2014 Jul 21.
Published in final edited form as: Synapse. 2007 Apr;61(4):242–251. doi: 10.1002/syn.20361

TABLE I.

Model summary

SRTM MRTM MRTM2
Model name Simplified reference tissue model Mutilinear reference tissue model Mutilinear reference tissue model 2
Reference Lammertsma and Hume (1996) Ichise et al. (2003) Ichise et al. (2003)
No. of parameters 3 3 2
Fitting Nonlinear Multilinear Multilinear
R2 Variable Variable Fixed

R2 is the rate of efflux from the reference region to plasma.