Blood flow imaging using a CW NMR technique

Details Blood flow imaging using a CW NMR technique Blood flow imaging using a CW NMR technique

1985-11-14

1987-09-29

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Determine fluid flow rate

324309, G01R 3320, G01N 2408

Patent

active

046971475

ABSTRACT:
An NMR blood flowmeter applies a continuous transverse excitation signal and a constant, homogeneous polarizing magnetic field to blood flowing through an active region. The polarizing magnetic field is contoured at opposite boundaries of this active region, and by switching these contours and collecting the resulting NMR signals, data is obtained from which the various components of blood flow may be calculated.

REFERENCES:
patent: 3473108 (1969-10-01), McCormick
patent: 3932805 (1976-01-01), Abe et al.
patent: 4516075 (1985-05-01), Moran
patent: 4565968 (1986-01-01), Macovski
patent: 4613818 (1986-09-01), Battocletti et al.
"The NMR Blood Flowmeter-Theory and History" by J. H. Battocletti et al, Medical Physics, vol. 8, No. 4, Jul./Aug. 1981.
P. R. Moran, A Flow . . . Humans, Magnetic Resonance Imaging, vol. 1, 1982, pp. 197-203.

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