NMR angiography system and method with immunity to inhomogeneity

Details NMR angiography system and method with immunity to inhomogeneity NMR angiography system and method with immunity to inhomogeneity

1986-08-06

1988-10-18

Smith, Ruth S.

Surgery

Truss

Pad

324306, 324309, A61B 505

Patent

active

047779560

ABSTRACT:
A two-dimensional projection image of the NMR activity within a volume is obtained. The signals due to static material are not excited and do not appear in the projection image. The signals due to moving blood in vessels produce an isolated image of the vessels with the superimposed structure removed. Excitation systems are used which excite only moving material and return static material to equilibrium. A 180.degree. excitation provides immunity to inhomogeneity.

REFERENCES:
patent: 4471306 (1984-09-01), Edelstein et al.
patent: 4506223 (1985-03-01), Bottomley et al.
patent: 4528985 (1985-07-01), Macovski
patent: 4532473 (1985-07-01), Wehrli
patent: 4595879 (1986-06-01), Lent et al.
patent: 4618827 (1986-10-01), Redington et al.

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