A MODIFIED IMAGING SEQUENCE FOR ACCURATE T-2 MEASUREMENTS USING NMR MICROSCOPY

A modified spin-echo pulse sequence is described that enables accurate T-2 measurements to be made in NMR microimaging experiments. The modi fied sequence eliminates cumulative diffusion losses that lead to an u nderestimation of the T-2 relaxation time using conventional spin-echo pulse sequences. The approach is theoretically justified and confirme d in comparative experiments on phantoms. (C) 1995 Academic Press, Inc .