NMR blood flow imaging

Details NMR blood flow imaging NMR blood flow imaging

1983-05-02

1985-05-14

Howell, Kyle L.

Surgery

Truss

Pad

324309, A61B 502

Patent

active

045165823

ABSTRACT:
A method and apparatus for producing two-dimensional, plan view images of in vivo blood flow networks using unique nuclear magnetic resonance (NMR) pulse sequences are disclosed. The method teaches the use of a pair of 90.degree. selective pulses separated by a delay time optimized to provide images with enhanced blood flow contrast by discriminating against stationary media surrounding the blood flow path. For the instant method, two-dimensional images are compiled by the illustrative apparatus using a collection of NMR slice data, wherein each slice reflects a one-dimensional projection of NMR received signal data in a thin planar slab selected to be generally orthogonal to the primary blood flow network. Further alternative embodiments discuss the use of free induction decay (FID) signals, as well as single pulse and multiple pulse spin echo sequences.

REFERENCES:
patent: 3191119 (1965-06-01), Singer
patent: 3809070 (1974-05-01), Doll et al.
patent: 4037585 (1977-07-01), Gildenberg
patent: 4110680 (1978-08-01), Bergmann et al.
patent: 4115730 (1978-09-01), Mansfield
patent: 4182173 (1980-01-01), Papadofrangakis et al.
patent: 4205687 (1980-06-01), White et al.
patent: 4259638 (1981-03-01), Krueger
patent: 4318044 (1982-03-01), Mansfield
patent: 4334543 (1982-06-01), Fehr
patent: 4374360 (1983-02-01), Sepponen
patent: 4411012 (1983-10-01), Pfeiler et al.
patent: 4426715 (1984-01-01), Baer et al.
Cho et al., Fourier Transform Nuclear Magnetic Resonance Tomographic Imaging, Proceedings of the IEEE, vol. 70, No. 10, Oct. 1982, pp. 1152-1173.
Singer, NMR Flow Imaging, Proceedings of an International Symposium on Nuclear Magnetic Resonance Imaging, Oct. 1981, pp. 185-190.
Gore, The Meaning and Significance of Relaxation in NMR Imaging, Proceedings of an International Symposium on Nuclear Magnetic Resonance Imaging, Oct. 1981, pp. 15-23.
Ordidge et al., Real Time Moving Images by NMR, Proceedings of an International Symposium on NMR Imaging, Oct. 1981, pp. 89-92.

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