title: Fast magnetic resonance spectroscopic imaging at 3 Tesla using autocalibrating parallel technique.
abstract: Magnetic resonance spectroscopic imaging (MRSI) is a powerful tool for diagnosis of many pathologic conditions. However conventional MRSI involves long scan times, in the order of 20 minutes. This work simulated an autocalibrating parallel technique based on GRAPPA algorithm for accelerating MRSI and applied it to 3 dimensional (3D) MRSI of the brain at 3 Tesla. Employing two fold undersampling in two phase-encoding directions, a four fold reduction in scantime was simulated. Metabolic parameters showed close agreement between the full and GRAPPA reconstructed spectral data.
authors.affiliation: Joint Graduate Group in Bioeng., California Univ., Berkeley, San Francisco, CA, USA.
authors.forename: Suchandrima
authors.initials: S
authors.lastname: Banerjee
authors.forename: Esin
authors.initials: E
authors.lastname: Ozturk-Isik
authors.forename: Sarah J
authors.initials: SJ
authors.lastname: Nelson
authors.forename: Sharmila
authors.initials: S
authors.lastname: Majumdar
mesh_terms: D000465:Algorithms; D001224:Aspartic Acid / Q000031:analogs & derivatives* / Q000032:analysis; D001921:Brain / Q000033:anatomy & histology* / Q000378:metabolism*; D002138:Calibration; D002794:Choline / Q000032:analysis*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods* / Q000592:standards; D008279:Magnetic Resonance Imaging / Q000379:methods* / Q000592:standards; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards; D014018:Tissue Distribution
chemical_list: D001224:Aspartic Acid; C000179:N-acetylaspartate; D002794:Choline