Models and Parameters¶

KinePET supports two public model names:

Name	Model
`irr`	Irreversible two-tissue compartment model
`rev`	Reversible two-tissue compartment model

Canonical parameter names:

Parameter	Description
`K1`	Delivery rate parameter
`k2`	Efflux rate parameter
`k3`	Binding or trapping rate parameter
`k4`	Reversible exchange parameter, active for `rev`
`vB`	Blood volume fraction
`delay`	Optional AIF delay in minutes
`dispersion`	Optional AIF dispersion in minutes
`Ki`	Net influx macroparameter

For the irreversible model, k4 is not active and Python result objects expose k4=None.

Bounds¶

The source of truth for bounds is src/tcm_model.cpp. Use kinepet.default_bounds() to inspect active bounds from Python:

kinepet.default_bounds(model="rev", fit_vb=True, fit_delay=True, fit_dispersion=True)

Default active bounds:

KinePET's exported names are canonical. Some external comparison methods use different parameter orders, so normalize names before comparing methods.