Imaging systems

Details Imaging systems Imaging systems

1979-05-22

1981-03-10

Michell, Robert W.

Surgery

Truss

Pad

324314, A61B 505

Patent

active

042547784

ABSTRACT:
In an apparatus for examining human bodies by nuclear magnetic resonance to produce images of cross-sectional slices of such bodies, it is desirable to reduce the recovery time between scans at different angles. A suitable pulse sequence for examination with minimum dispersion is disclosed. Repetition of the sequence with inverted pulses to drive the spins back to equilibrium and reduce recovery time is also disclosed.

REFERENCES:
patent: 3789832 (1974-02-01), Domadian
Mansfield, P. "Proton Spin Imaging by Nuclear Magnetic Resonance", Contemp. Physics, 1976, vol. 17, No. 6, pp. 553-576.
Becker, E. D. et al., "Driven Equilibrium Fourier Transform Spectroscopy, A New Method for Nuclear Magnetic Resonance Signal Enhancement", Jrnl. of Amer. Chem. Soc., 91:27, Dec. 31, 1969 pp. 7784, 7785.
Easson, R. M., "Design & Performance of Yig-Tuned Gunn Oscillators," Microwave Journal, Feb. 1971, pp. 53-54, 56, 58, 68.
Hoult, D. I., "Zeugmatography; A Criticism of the Concept of a Selective Pulse in the Presence of a Field Gradient," Jrnl. of Mag. Res. 26, 165-167 (1977).

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