The water component of an NMR image is suppressed by selectively detecting only those protons which are coupled to other protons. Selectivity is obtained by polarization transfer between the coupled spins. Since spin-spin coupling is independent of magnetic field strength, the suppression obtainable
Lipid and water suppression by selective 1H homonuclear polarization transfer
β Scribed by Christopher J. Hardy; Charles L. Dumoulin
- Book ID
- 102527615
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 448 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
β¦ Synopsis
A pulse sequence is presented which uses Polarization Transfer by a Selective Homonuclear Technique (POTSHOT) to retain all resonances, in phase, from a selected coupled spin system while suppressing all other peaks, from both coupled and noncoupled spins. This technique, which is a selective form of Homonuclear Polarization Transfer (HPT), has been used in a 1.5-T whole-body system to generate edited 1H lactate spectra from lactate/oil phantoms and from excised dog hearts.
π SIMILAR VOLUMES
An RF and field gradient pulse sequence is presented permitting the single-scan volume-selective spectral editing of the signals of coupled spins. The attribute "single scan" means that the editing of resonance lines is performed in each accumulation or phase cycling scan rather than by subtraction
The authors acknowledge the constant assistance of \(P\). Fellmann and the help of A. Maftah and A. Zachowski in the bovine heart mitoplast sample preparation. D.E.W. thanks D. LΓ©vy and M. Seigneuret for helpful discussions about the DANTE-Z sequence and advice on spectrometer operation. D.E.W. was
## Abstract A new method for the simultaneous suppression of water and lipid resonances using a series of dualβband frequencyβselective radiofrequency (RF) pulses with associated dephasing gradients is presented. By optimizing the nutation angles of the individual pulses, the water and lipid suppre