Heteronuclear
proton MRI is a recent method for MRI cell tracking and opens up the
possibility for Multicolor MRI when using different Ln-DOTMA complexes. Here,
we compare UTE and CSI as readout with regard to SNR efficiency, sensitivity
towards temperature changes and performance in separating resonance lines from
different Ln-DOTMA complexes at 9.4 T. UTE readout provides faster image
acquisition and higher SNR efficiency than CSI. CSI on the other hand is
insensitive to temperature changes. Multicolor MRI was possible with both
readout schemes. Further studies will use these methods for in vivo cell
tracking experiments.