Electricity: measuring and testing – Particle precession resonance
Patent
1997-05-14
1999-08-10
Arana, Louis
Electricity: measuring and testing
Particle precession resonance
600420, G01V 300
Patent
active
059364041
ABSTRACT:
In a nuclear magnetic resonance tomography apparatus wherein imaging is implemented with hyperpolarized gases, a first magnet system having a high field strength for the pre-polarization of the nuclear spins is provided. A gradient system for generating magnetic field gradients and a radio-frequency arrangement for the excitation of nuclear spins in a subject as well as for the read-out of the arising nuclear magnetic resonance signals are provided in a second magnet system having lower field strength.
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"Novel Approaches to Low-Cost MRI," Macovski et al., Magnetic Resonance in Medicine, vol. 30 (1993), pp. 221-230.
"Magnetic Resonance Imaging Using Hyperpolized .sup.129 Xe," Albert et al., American Journal of Electromedicine, Dec. 1994, pp. 72-80.
"A Novel Double-Tuned Circuit for in Vivo NMR," Rajan et al., J. of Magnetic Resonance, vol. 74 (1987), pp. 147-154.
High-Power .sup.1 H-.sup.19 F Excitation in a Multiple-Resonance Single-Coil Circuit, Kendick et al., J. of Magnetic Resonance, vol. 75 (1987), pp. 506-508.
Bett Gregor
Ladebeck Ralf
Arana Louis
Siemens Aktiengesellschaft
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