The driven equilibrium fourier transform NMR technique: An experimental study

A rapid measurement of : The DECPMG sequence

“…8, including lines of best fit to Eq. (23). For the sandstone, s m ¼ 6 Â 10 À10 s and s s ¼ 1 Â 10 À6 s. For the limestone, s m ¼ 5 Â 10 À10 s and s s ¼ 1 Â 10 À7 s. Both the surface diffusion correlation and residency times are shorter in the limestone than in the sandstone, suggesting the water has a stronger interaction with the sandstone surface.…”

“…This is suitable for samples where both T 1 and T 2 are approximately equal. In systems where T 2 ( T 1 the sensitivity enhancement is less significant due to transverse relaxation over the acquisition interval [23]. For this reason, other sensitivity enhancement techniques have proven more popular in spectroscopic applications [24].…”

MR imaging of articular cartilage using driven equilibrium

“…Driven equilibrium Fourier transform (DEFT) imaging has been used in the past as a method of signal enhancement (21)(22)(23)(24)(25). Because this signal enhancement depends on the tissue T 1 and T 2 , DEFT can be used to generate tissue contrast.…”

Magnetization recovery for signal enhancement: a fast imaging DEFT-based technique

“…The signal generated by the MARYSE sequence is similar to the well-known DEFT signal described by Becker and co-worker [17]. Here, the excitation flip angle is 90°, and Tem is the period between the two 90°p ulses.…”