Method for operating an NMR tomography apparatus suitable for us

Details Method for operating an NMR tomography apparatus suitable for us Method for operating an NMR tomography apparatus suitable for us

1997-03-11

1998-08-25

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324314, G01V 300

Patent

active

057986436

ABSTRACT:
In a method in the form of a single pulse sequence for operating a nuclear magnetic resonance tomography apparatus, suitable for use with a chronologically constant inhomogeneity of the basic magnetic field N radio-frequency excitation pulses (N<2), spaced with a time spacing T, are emitted onto an examination subject, under the effect of a magnetic field gradient in a first direction, the radio-frequency excitation pulses respectively having different frequency bands adjoining one another. Subsequently, radio-frequency refocusing pulses spaced with a time spacing of T/2 are emitted, with the nth radio-frequency excitation pulse and the nth radio-frequency refocusing pulse having respective frequency bands that substantially agree.

REFERENCES:
patent: 5422572 (1995-06-01), Yao
patent: 5572126 (1996-11-01), Shinnar
patent: 5619138 (1997-04-01), Rourke
"SPI-Single Point FID Imaging," Nauerth, SMRM '93, p. 1215.
"Frequency-Modulated Radiofrequency Pulses in Spin-Echo and Stimulated-Echo Experiments" Kunz, Magnetic Resonance in Medicine, vol. 4, (1987), pp. 129-136.
"Use of Frequency-Modulated Radiofrequency Pulses in MR Imaging Experiments," Kunz, Magnetic Resonance in Medicine, vol. 3, (1986), pp. 377-384.

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