Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1983-08-29
1986-09-09
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324309, G01R 3308
Patent
active
046111727
ABSTRACT:
Reception signal processing apparatus in nuclear magnetic resonance diagnostic apparatus to display as an image the distribution of the spin density or relaxation time of specified atomic nuclei existing in an object utilizing nuclear magnetic resonance phenomena including a phase demodulator for phase demodulating a nuclear magnetic resonance signal evoked by nuclear magnetic resonance phenomena in accordance with two reference waves whose phases are different from one another by 90.degree., an analog-to-digital converter for digitalizing the separated two signals obtained by the phase demodulator, and a phase correction processor for automatically correcting the phase difference between the reference waves and nuclear magnetic resonance signal to produce a frequency spectrum by processing the digitalized signals.
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Lai et al., "Automatic Correction of Nuclear Magnetic Resonance Zeugmatographic Projections," J. Phys. E: Sci. Instrum, vol. 14, 1981.
Neff et al., "Fully Automatic Software Correction of Fourier Transform NMR Spectra," Journal of Magnetic Resonance, 25, 335-340 (1977).
Eisenzopf Reinhard J.
Peterkin G.
Tokyo Shibaura Denki Kabushiki Kaisha
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