Calculation of signal intensities in hybrid sequences for fast NMR imaging.
A number of techniques that recently have been used for fast NMR-imaging are based on a hybrid sequence of echo planar imaging (EPI) and FLASH imaging: after each NMR excitation several k-space lines are measured. The complete k-space is covered by performance of several excitations. It has been observed that there is usually an optimal hybrid sequence that maximizes the signal-to-noise ratio. In this work, a method is presented that allows a determination of the optimal sequence as a function of the relaxation times T1 and T2*.
Deichmann
R
R
Physikalisches Institut, Universität Würzburg, Germany.
Adolf
H
H
Nöth
U
U
Kuchenbrod
E
E
Schwarzbauer
C
C
Haase
A
A
D017352:Echo-Planar Imaging / Q000379:methods; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D019047:Phantoms, Imaging