title: Dual resonant birdcage coils for 1H detected 13C microscopic imaging at 11.7 T.
abstract: Liquid state, rotating frame cross polarisation experiments are very sensitive to RF field inhomogeneity. In this work, we present an easily fabricated, co-resident high- and low-pass linear birdcage resonator, optimised to perform liquid state rotating frame polarisation transfer at 1H and 13C frequencies. Both the RF fields have been experimentally mapped, and used to validate the spatial signal dependence of a proton detected, 13C image. The predicted performance was then confirmed using PRAWN-based, cyclic J-cross polarisation (CYCLCROP) imaging. A novel variant of a B(1)-field mapping approach is also presented, using the signal enhancement of the CYCLCROP sequence to generate proton detected, 13C field maps.
authors.affiliation: The Magnetic Resonance Centre, School of Physics and Astronomy, University of Nottingham, University Park, NG7 2RD, Nottingham, UK.
authors.forename: A M
authors.initials: AM
authors.lastname: Hudson
authors.forename: W
authors.initials: W
authors.lastname: Köckenberger
authors.forename: R W
authors.initials: RW
authors.lastname: Bowtell
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D002247:Carbon Isotopes; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D006801:Humans; D006859:Hydrogen; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D008853:Microscopy / Q000295:instrumentation* / Q000379:methods; D011846:Radio Waves
chemical_list: D002247:Carbon Isotopes; D006859:Hydrogen