title: Real-based Polarity-preserving Asymmetric Fourier Imaging (RepAFI).
abstract: We proposed and assessed a modified asymmetric Fourier imaging (AFI) technique named real-based polarity-preserving AFI (RepAFI), in which the low-pass filter kernel for background phase estimation in AFI is optimized to preserve the magnetization polarity information for blood vessels and cerebrospinal fluid (CSF) even for data obtained using phase-sensitive inversion-recovery spin-echo-based (PSIR-SE) sequences with asymmetrical sampling in the k-space. Our proposed RepAFI technique achieves a practical balance of image quality and simplicity to provide better performance than conventional AFI methods.
authors.affiliation: Clinical Application Research and Development Department, Center for Medical Research and Development, Toshiba Medical Systems Corporation.
authors.forename: Tokunori
authors.initials: T
authors.lastname: Kimura
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kusahara
mesh_terms: D000465:Algorithms; D001921:Brain / Q000033:anatomy & histology*; D005583:Fourier Analysis; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D019047:Phantoms, Imaging