NMR DATA ACQUISITION WITH MULTIPLE INTERECHO SPACING

摘要

NMR data are acquired with variable spacing between refocusing pulses, givin g data with a variable interecho time TE. Under certain conditions, diffiIsion effects can be neglected and data acquired with a multiple TE spacing may be used to obtain a T2 distribution with increased resolution and reduced power requirements. In gas reservoirs, the maximum TE may be determined from diffusion considerations using a dual wait time pulse sequence and this maximum TE is used to acquire data with dual TE.