Spectroscopic imaging using variable angle excitation from adiabatic plane-rotation pulses.

The technique of chemical-shift (spectroscopic) imaging has been implemented using a variable angle adiabatic plane-rotation pulse for small angle excitation over the entire sensitive volume of a surface coil. Optimum signal-to-noise ratio per unit time is obtained in applications where the pulse repetition rate is fast relative to 1/5 T1.