Improvements in snap-shot nuclear magnetic resonance imaging.
New variants of the ultra-high-speed echo-planar imaging technique have been used to obtain snap-shot images of adult patients and volunteers at 0.1 T. Modified pulsed-gradient sequences together with non-linear signal sampling and activity screened gradients have greatly improved the image quality obtainable by single-shot methods. A particular variant, modulus blipped echo-planar single-pulse technique (MBEST), although slightly slower than the blipped echo-planar single-pulse technique (BEST), is experimentally more robust and incorporates intrinsic T2 weighting. An account of these improvements together with some experimental results is presented.
Howseman
A M
AM
Department of Physics, University of Nottingham.
Stehling
M K
MK
Chapman
B
B
Coxon
R
R
Turner
R
R
Ordidge
R J
RJ
Cawley
M G
MG
Glover
P
P
Mansfield
P
P
Coupland
R E
RE
D000328:Adult; D000368:Aged; D006331:Heart Diseases / Q000175:diagnosis; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged