scholarly journals Real-time motion and B 0 correction for localized adiabatic selective refocusing (LASER) MRSI using echo planar imaging volumetric navigators

2011 ◽  
Vol 25 (2) ◽  
pp. 347-358 ◽  
Author(s):  
Aaron T. Hess ◽  
Ovidiu C. Andronesi ◽  
M. Dylan Tisdall ◽  
A. Gregory Sorensen ◽  
André J. W. van der Kouwe ◽  
...  

Ultra-high-speed echo-planar imaging (EP1) allows acquisition of a complete twodimensional image in 64 to 128 ms devoid of movement artefact and without sacrifice of contrast due to relaxation time effects. In conventional whole-body MRI, however, obtrusive movement artefact and extended imaging time, resulting from the need to apply multiple sequences to facilitate lesion detection and pathological characterization, remain limitations. Reduced total examination time increases patient tolerance and throughput • furthermore optimization of contrast to achieve maximal conspicuity of particular features in liver or brain pathology is achieved simply and interactively by real time adjustment of the imaging parameters. The method provides the opportunity to study in real time dynamic events such as flow phenomena in the vascular and cerebrospinal fluid compartments of the brain as well as the kinetics of administered contrast agents, EPI is the only means of capturing the irregular motion of aperiodic cardiac events and bowel peristalsis.


1991 ◽  
Vol 18 (1) ◽  
pp. 1-8 ◽  
Author(s):  
D. N. Guilfoyle ◽  
P. Gibbs ◽  
R. J. Ordidge ◽  
P. Manwield

PLoS ONE ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. e91620 ◽  
Author(s):  
Yury Koush ◽  
Mark A. Elliott ◽  
Frank Scharnowski ◽  
Klaus Mathiak

2009 ◽  
Vol 61 (4) ◽  
pp. 994-1000 ◽  
Author(s):  
Iulius Dragonu ◽  
Baudouin Denis de Senneville ◽  
Bruno Quesson ◽  
Chrit Moonen ◽  
Mario Ries

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