title: Quantification in Hyperpolarized NMR.
abstract: Quantitative aspects of hyperpolarized NMR are analyzed in the present work, and it is shown theoretically and experimentally that measured "apparent" signal enhancements could deviate significantly from real enhancements of polarization. Expressions are given as a function of spin count to deduce real enhancements from measured "apparent" enhancements, and vice versa. While the findings are of particular relevance to high-field work employing high-Q probes, and to analytical applications of hyperpolarized NMR whose objective is the measurement of spin count, our experiments demonstrate their significance even for low- and moderate-field work with probes of moderate Q-factor.
authors.affiliation: MRI-MRS Centre, Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India.
authors.forename: Arnab
authors.initials: A
authors.lastname: Dey
authors.affiliation: MRI-MRS Centre, Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India.
authors.forename: Narayanan
authors.initials: N
authors.lastname: Chandrakumar
mesh_terms: D009682:Magnetic Resonance Spectroscopy / Q000379:methods*