TABLE A1.

Parameters that are measured from the data

	Measured variables	Units
Water exchange time	$T_{\mathit{ex}}^w$	ms
Tissue transit time	δ	ms
Arterial transit time	δα	ms
Cerebral blood flow	CBF	mL/100 g/min
Intravascular ASL signal	ΔM IV	–
Extravascular ASL signal	ΔM EV	–
Intravascular transverse relaxation time	T2IV	ms
Extravascular transverse relaxation time	T2EV	ms
Equilibrium magnetisation	M0	–