Projection-reconstruction methods: fast imaging sequences and data processing.
New, rapid two- and three-dimensional imaging sequences based on steady-state gradient echoes and projection-reconstruction (PR) techniques are proposed. Quantitative studies show that fast PR sequences and classical, fast gradient-echo Fourier transform sequences lead to identical contrasts. In order to minimize inhomogeneity effects, a particular focus has been placed on echo-time reduction. The use of a weighting window permits one to acquire severely truncated echoes; partial k-space scanning may be considered.
Crémillieux
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Y
Laboratoire de R. M. N., Université Claude Bernard, Lyon I, Villeurbanne, France.
Briguet
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A
Deguin
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A
D000818:Animals; D005583:Fourier Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008961:Models, Structural; D012756:Sheep; D012815:Signal Processing, Computer-Assisted