title: Low-field 3-DFT MRI: conceptual, analytical, and experimental aspects.
abstract: Three-dimensional Fourier transform (3-DFT) magnetic resonance imaging (MRI) offers advantages in terms of signal-to-noise (S/N) per unit of time for the case where a large number of slices is desired. This advantage is enhanced when the relaxation time, T(1 ), is short. Because time limitations in 3-DFT imaging force the use of short time intervals, TR, between excitations of a slice, lesion contrast is often undesirable at mid-and high-field strength even when the S/N is good. At low fields, where T(1) values are short, high S/N and contrast can both be achieved with 3-DFT MR images. The conceptual and analytical aspects of low-field 3-DFT MRI are presented and demonstrated at 640 G.
authors.affiliation: California Univ., San Francisco, CA.
authors.forename: D M
authors.initials: DM
authors.lastname: Kramer
authors.forename: L
authors.initials: L
authors.lastname: Kaufman
authors.forename: P
authors.initials: P
authors.lastname: Rothschild
authors.forename: J
authors.initials: J
authors.lastname: Hale
authors.forename: J
authors.initials: J
authors.lastname: Wummer
authors.forename: K K
authors.initials: KK
authors.lastname: Hake