title: A new RF tagging pulse based on the Frank poly-phase perfect sequence.
abstract: Radio frequency (RF) spectrally selective multiband pulses or tagging pulses, are applicable in a broad range of magnetic resonance methods. We demonstrate through simulations and experiments a new phase-modulation-only RF pulse for RF tagging based on the Frank poly-phase perfect sequence. In addition, we introduce an extended version with a WURST modulation (Frank-WURST). The new pulses exhibit interesting and flexible spin tagging properties and are easily implemented in existing MR sequences, where they can substitute slice-selective pulses with no additional alterations.
authors.affiliation: MR Research Centre, Institute of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark; Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Aarhus, Denmark. Electronic address: cl@mr.au.dk.
authors.forename: Christoffer
authors.initials: C
authors.lastname: Laustsen
authors.affiliation: School of Mathematical Sciences, University College Dublin, Belfield, Dublin, Ireland.
authors.forename: Marcus
authors.initials: M
authors.lastname: Greferath
authors.affiliation: MR Research Centre, Institute of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark.
authors.forename: Steffen
authors.initials: S
authors.lastname: Ringgaard
authors.affiliation: Center for Insoluble Protein Structures (inSPIN), Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Aarhus, Denmark.
authors.forename: Niels Chr
authors.initials: NC
authors.lastname: Nielsen
authors.affiliation: The Technical University of Denmark, Department of Electrical Engineering, Kgs Lyngby, Denmark; GE Healthcare, Brøndby, Denmark.
authors.forename: Jan H
authors.initials: JH
authors.lastname: Ardenkjær-Larsen
keywords: Frank; MRI; Poly-perfect sequence; Spin tagging