MULTIPLE FREQUENCY METHOD FOR NUCLEAR MAGNETIC RESONANCE LONGITUDINAL RELAXATION MEASUREMENT AND PULSING SEQUENCE FOR POWER USE OPTIMIZATION

摘要

A method for determining nuclear magnetic resonance longitudinal relaxati on time of a medium. The method includes magnetically polarizing nuclei in the medium along a static magnetic field, momentarily inverting the magnetic polarizati on of the nuclei within each one of a plurality of different spatial volumes within th e medium, transversely magnetizing the nuclei in each one of the spatial volumes after an individual recovery time corresponding to each one of the spatial volumes, and measurin g an amplitude of a magnetic resonance signal from each one of the spatial volume s.