Fig. 1

Magnetic resonance imaging (MRI) protocol comprising serial measurements. Measurements were collected in triplicate at baseline and then repeated from time (T) = 20–65 min following meal ingestion. Measurements were collected to assess blood flow to the liver and collateral flow (using phase contrast sequences), liver tissue perfusion (using the arterial spin labelling (ASL) technique) and liver transverse relaxation time (T2*), an indirect marker of oxygenation