Figure 3.

Spatial distribution of ¹³C signal after oral administration of [1‐¹³C]‐glucose (participant 2). (A) Axial ¹H MRI image that shows relative positions of the ¹³C paddle receive array coils and the slice prescription for ¹³C CSI. Fiducial markers indicate the location of each channel of the paddle coils. (B) Spatial distribution of the ¹³C metabolites at 90‐110 ppm. The metabolite maps are overlaid over the ¹H MRI. [1‐¹³C]‐glucose and [1‐¹³C]‐glycogen signals are mainly detected from where stomach (black arrow) and liver (white arrows) are located. Signals from the stomach area were dominant in channels #1‐4 (B, left), whereas channels #5‐8 (B, right) primarily detected signals from the liver. All images scale = 32 cm by 32 cm. Abbreviation: ch, channel.