Inspecting method and apparatus based on nuclear magnetic resona

Details Inspecting method and apparatus based on nuclear magnetic resona Inspecting method and apparatus based on nuclear magnetic resona

1996-05-13

1998-08-04

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324309, A61B 555

Patent

active

057899223

ABSTRACT:
In an inspecting method based on nuclear magnetic resonance, a burst wave having a plurality of sub-pulses frequency-modulated with a high frequency is generated, the burst wave is amplitude-modulated with at least a function which repeats polarity inversion, the amplitude-modulated burst wave is irradiated, as an exciting high frequency pulse, to an object to be inspected, and gradient magnetic fields are generated in predetermined pulse sequence to measure a nuclear magnetic resonance signal.

REFERENCES:
patent: 5126673 (1992-06-01), Hennig
patent: 5212448 (1993-05-01), Le Roux et al.
patent: 5544652 (1996-08-01), Duyn
J. Duyn, P. van Gelderen, G. Liu, C.T.W. Moonen, Fast Volume Scanning with Frequency-Shifted BURST MRI. Magn. Reson. Med. 32, 429-432, 1994.
L. Zha, R.E. Wysong, and I.J. Lowe, Optimized Ultra-Fast Imaging Sequence (OUFIS), in "Proc., SMRM, 10th Annual Meeting, 1993," p. 471.

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