✦ LIBER ✦

High-resolution MR spectroscopy via intermolecular double-quantum coherences in inhomogeneous B0 and B1 fields

✍ Scribed by Yanqin Lin; Congbo Cai; Shuhui Cai; Jianhui Zhong; Zhong Chen

Book ID: 103839008
Publisher: Elsevier Science
Year: 2011
Tongue: English
Weight: 577 KB
Volume: 29
Category: Article
ISSN: 0730-725X
DOI: 10.1016/j.mri.2011.02.001

No coin nor oath required. For personal study only.

✦ Synopsis

Inhomogeneity in static field B0 and/or RF field B1 is inevitable under some circumstances. In this work, a method based on intermolecular double-quantum coherences is employed for high-resolution 1D MR spectroscopy via 2D acquisition under such a condition. High-resolution information on chemical shifts, multiplet patterns, J coupling constants and relative peak areas can be retained in the resulting 1D projected spectra, as shown with results from a narrow-bore NMR spectrometer and a whole-body clinical scanner.

📜 SIMILAR VOLUMES

High-resolution NMR spectroscopy in inho

High-resolution NMR spectroscopy in inhomogeneous fields via Hadamard-encoded intermolecular double-quantum coherences

✍ Yushan Chen; Shuhui Cai; Congbo Cai; Xiaohong Cui; Zhong Chen 📂 Article 📅 2012 🏛 John Wiley and Sons 🌐 English ⚖ 964 KB

A new pulse sequence based on intermolecular double‐quantum coherences was proposed to obtain one‐dimensional high‐resolution liquid NMR spectra in inhomogeneous magnetic fields via Hadamard encoding. In contrast with the conventional intermolecular multiple‐quantum coherences method with a two‐dime

Fast high-resolution 2D correlation spec

Fast high-resolution 2D correlation spectroscopy in inhomogeneous fields via Hadamard intermolecular multiple quantum coherences technique

✍ Congbo Cai; Fenglian Gao; Shuhui Cai; Yuqing Huang; Zhong Chen 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 716 KB

High-Resolution J-scaling Nuclear Magnet

High-Resolution J-scaling Nuclear Magnetic Resonance Spectra in Inhomogeneous Fields via Intermolecular Multiple-Quantum Coherences

✍ Lin, Yanqin; Chen, Zhong; Cai, Shuhui; Zhong, Jianhui 📂 Article 📅 2009 🏛 Society for Applied Spectroscopy 🌐 English ⚖ 524 KB

High-resolution MRS in the presence of f

High-resolution MRS in the presence of field inhomogeneity via intermolecular double-quantum coherences on a 3-T whole-body scanner

✍ Yanqin Lin; Tianliang Gu; Zhong Chen; Scott Kennedy; Mathews Jacob; Jianhui Zhon 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 426 KB 👁 1 views

## Abstract Signals from intermolecular double‐quantum coherences (iDQCs) have been shown to be insensitive to macroscopic field inhomogeneities and thus enable acquisition of high‐ resolution MR spectroscopy in the presence of large inhomogeneous fields. In this paper, localized iDQC ^1^H spectros

Numerical Studies of Intermolecular Mult

Numerical Studies of Intermolecular Multiple Quantum Coherences: High-Resolution NMR in Inhomogeneous Fields and Contrast Enhancement in MRI

✍ Sean Garrett-Roe; Warren S Warren 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 393 KB

A fast, efficient numerical algorithm is used to study intermolecular zero-quantum coherences (iZQCs) and double-quantum coherences (iDQCs) in two applications where the three-dimensional structure of the magnetization is important: high-resolution NMR in inhomogeneous fields and contrast enhancemen

A Selective excitation/B0 gradient techn

A Selective excitation/B0 gradient technique for high-resolution 1H NMR studies of metabolites via zero-quantum coherence and polarization transfer

✍ David M. Doddrell; Ian M. Brereton 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 455 KB

A new method for selective observation of scalar coupled metabolites by either zero-quantum coherence transfer or polarization transfer with concurrent water suppression in a single acquisition was developed. Gaussian shaped RF pulses were used to selectively generate multiple-quantum and zero-quant