Figure 11. (a) Unlocalized and (b and c) single voxel ¹⁹F experiments in a patient receiving a bolus dose of 5-fluorouracil (5FU). The two black arrows indicate the expected resonance of -fluoro--alanine (right arrow) and bile acid conjugated -fluoro--alanine (left arrow). Note how both resonances are visible in the (a) unlocalized sequence. As expected, -fluoro--alanine is detected in the liver (b) and note the single resonance detected in the gallbladder centred on the expected resonance of bile acid conjugated -fluoro--alanine.