title: Low-power MRI by Frank-sequence excitation.
abstract: Recently, a new NMR method employing an rf excitation scheme with strongly reduced power has been introduced, which is based on modulating rf pulses according to Frank sequences. For many applications, a reduction of rf power is essential, e.g. to eliminate bulky rf pre-amplifiers or in medical high-field MRI to preserve patient safety. Another benefit of the new scheme are very short dead times allowing for measurements of samples with short relaxation times. In this work, Frank-sequence excitation is used for low-power imaging for the first time. Results of one-, two-, and three-dimensional imaging experiments are presented and compared to conventional images.
authors.affiliation: Institute for Technical and Macromolecular Chemistry, RWTH Aachen University, Worringer Weg 1, 52074 Aachen, Germany. amor@itmc.rwth-aachen.de
authors.forename: Nadia
authors.initials: N
authors.lastname: Amor
authors.forename: Bernhard
authors.initials: B
authors.lastname: Blümich
mesh_terms: D000465:Algorithms; D000669:Amplifiers, Electronic; D018360:Crystallography, X-Ray; D004574:Electromagnetic Fields; D005583:Fourier Analysis; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D009682:Magnetic Resonance Spectroscopy; D061214:Patient Safety; D019047:Phantoms, Imaging