Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1990-08-01
1992-01-07
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324309, G01R 3320
Patent
active
050795058
ABSTRACT:
A pulse sequence for operating a magnetic resonance imaging apparatus for fast calculation of images of the fat and water distribution in an examination subject includes the steps of charging the examination subject with a first radio-frequency pulse which is selective with respect to a first spectral component and charging the examination subject with a second radio-frequency pulse which is selective with respect to a second spectral component. A dephasing gradient is activated between the two radio frequency pulses. The spin system is thus phase coded in two directions. A signal with respect to the second spectral component is read out under a first read-out gradient and a signal with respect to the first spectral component is read out under a second read-out gradient. Images of the fat and water distribution in the examination subject can thus be acquired with one measuring sequence.
REFERENCES:
patent: 4796635 (1989-01-01), Dumoulin
patent: 4800889 (1989-01-01), Dumoulin et al.
patent: 4825159 (1989-04-01), Oppelt et al.
patent: 4987369 (1991-01-01), Van Stapele et al.
patent: 5010300 (1991-04-01), Paley et al.
patent: 5038784 (1991-08-01), Dumoulin
"Spin Echo Imaging of Multiple Chemical Shifts", Lohman et al., Mag. Res. in Med., vol. 5, No. 1 (1987), pp. 83-86.
"A One-Shot Lactate-Editing Sequence for Localized Whole-Body Spectroscopy", McKinnon et al., Mag. Res. in Med., vol. 8, No. 3 (1988), pp. 355-361.
"A New Steady-State Imaging Sequence for Simultaneous Acquisition of Two NMR Images with Clearly Different Contrasts", Bruder et al., Mag. Res. In Med., vol. 7 (1988), pp. 35-42.
".sup.1 H NMR Chemical Shift Selective (CHESS) Imaging", Haase et al., Phys. Med. Biol., vol. 30, No. 4 (1985), pp. 341-344.
"Fast Chemical Shift Imaging: Application on 3D Acquisition", Deimling et al., 6th SMRM Congress, NY, Abstract p. 447.
Deimling Michael
Loeffler Wilfried
Siemens Aktiengesellschaft
Tokar Michael J.
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