Increased SNR and reduced distortions by averaging multiple gradient echo signals in 3D FLASH imaging of the human brain at 3T

Journal of Magnetic Resonance Imaging

Volumn 29, Issue 1, 2009, Pages 198-204

  Helms, Gunther ^a,b   Dechent, Peter ^a  

^a UNIVERSITY OF GÖTTINGEN   (Germany)

^b UNIVERSITY MEDICAL CENTER GÖTTINGEN   (Germany)

Author keywords

Gradient echo; Multi echo; Signal to noise ratio; Steady state; T2*

Indexed keywords

ARTICLE; BRAIN BLOOD VESSEL; BRAIN CORTEX; ECHO PLANAR IMAGING; FAST LOW ANGLE SHOT MAGNETIC RESONANCE IMAGING; HUMAN; HUMAN EXPERIMENT; NEUROIMAGING; NORMAL HUMAN; NUCLEAR MAGNETIC RESONANCE IMAGING; PRIORITY JOURNAL; SIGNAL NOISE RATIO; SIMULATION; THREE DIMENSIONAL IMAGING;

ALGORITHMS; ARTIFACTS; BRAIN; ECHO-PLANAR IMAGING; HUMANS; IMAGE ENHANCEMENT; IMAGE INTERPRETATION, COMPUTER-ASSISTED; REPRODUCIBILITY OF RESULTS; SENSITIVITY AND SPECIFICITY;

EID: 60349117378     PISSN: 10531807     EISSN: 15222586     Source Type: Journal    
DOI: 10.1002/jmri.21629     Document Type: Article

References (9)

1. Haase A, Frahm J, Matthaei D, Hänicke W, Merboldt K-D. FLASH imaging: rapid NMR imaging using low flip angle pulses. J Magn Reson 1986;67:258-266.
2. Helms G, Dathe H, Dechent P. Quantitative FLASH MRI at 3T using a rational approximation of the Ernst equation. Magn Reson Med 2008;59:667-672.
3. Ernst RR, Anderson WA. Application of Fourier transform to magnetic resonance spectroscopy. Rev Sci Instrum 1966;37:93-98.
4. Xu Y, Haacke EM. Partial Fourier imaging in multi-dimensions: a means to save a full factor of two in time J Magn Reson Imaging 2001;14:628-635.
5. Yang Q, Demeure R, Dardzinski B, Arnold B, Smith M. Multiple echo frequency-domain image contrast: Improved signal-to-noise ratio and T2(T2*) weighting. Magn Reson Med 1999;41:423-428.
6. Elolf E, Bockermann V, Gringel T, Knauth M, Dechent P, Helms G. Direct visualization of the subthalamic nucleus using susceptibility (T2*) weighted multiple gradient acquisition. AJNR Am J Neuroradiol 2007;28:1093-1097.
7. Helms G, Gringel T, Elolf E, Schulz-Schaeffer W, Dechent P. Optimized high-resolution mapping of magnetisation transfer at 3 Tesla reveals substructures in the human thalamus in clinically feasible measurement time. In: Proc 15th Annual Scientific Meeting ISMRM, Berlin, 2007. Abstract 2058.
8. WeiskopfN, Helms G. Multi-parameter mapping ofthe human brain at 1mm resolution in less than 20 minutes. In: Proc 16th Annual Scientific Meeting ISMRM, Toronto, 2008. Abstract 2241.
9. Howarth C, Hutton C, Deichmann R. Improvement of the image quality of T1-weighted anatomical brain scans. Neuroimage 2005; 29:930-937.