Method of accurate and rapid NMR imaging of computed T.sub.1 and spin density

摘要

A method is provided for accurate and rapid NMR imaging of computed T. sub.1 and M.sub.o (spin density) NMR images. The imaging data is acquired using a repetition of a sequence made up of RF and magnetic- field- gradient pulses. Each repetition of the sequence includes at least one step of reducing the net longitudinal magnetization in a predetermined region of the sample to zero. The longitudinal magnetization is allowed to at least partially recover prior to exciting nuclear spins in the predetermined region to produce at least one NMR spin-echo signal due primarily to the recovered magnetization. The spin- echo signal is sampled in the presence of a magnetic-field gradient for encoding spatial information.