title: Projection-reconstruction methods: fast imaging sequences and data processing.
abstract: 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.
authors.affiliation: Laboratoire de R. M. N., Université Claude Bernard, Lyon I, Villeurbanne, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Crémillieux
authors.forename: A
authors.initials: A
authors.lastname: Briguet
authors.forename: A
authors.initials: A
authors.lastname: Deguin
mesh_terms: 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