Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1985-07-26
1987-07-21
Levy, Stewart J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
128653, G01R 3320
Patent
active
046821082
ABSTRACT:
The disclosure relates to nuclear spin tomography equipment in which means (22, 24) are provided for the control of the acquisition of the Fourier rows of the measurement matrix as a function of a respiration signal. The equipment includes a Fourier row counter (25) which influences a circuit (26) that controls the measurement signal acquisition. In a first embodiment of the invention the measurement signal acquisition is always released for all rows outside a predetermined region, but is a function of the respiration phase signal inside this region. The predetermined row region may comprise approximately 10% of all rows to be measured and should lie symmetrically about the center of the matrix. A further reduction of the measuring time is realized, according to another embodiment of the invention, by dispensing altogether with measurement in the row edge region of the matrix.
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Scientific American Publication, dated May 1982, vol. 246, No. 5, pp. 54-64.
W. S. Hinshaw et al., The Fundamentals of Magnetic Resonance Imaging, Technicare Corp., 1984, pp. 53-56.
Reichenberger Helmut
Schneider Siegfried
Stetter Eckart
Wirth Axel
Edelman Lawrence C.
Levy Stewart J.
Oldham Scott M.
Siemens Aktiengesellschaft
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