Electricity: measuring and testing – Particle precession resonance – Determine fluid flow rate
Patent
1987-07-21
1989-02-07
Chapman, John
Electricity: measuring and testing
Particle precession resonance
Determine fluid flow rate
324309, 128653, G01R 3320
Patent
active
048034312
ABSTRACT:
A method for imaging a three-dimensional moving object is disclosed, by which a static magnetic field, gradient magnetic fields and high frequency magnetic field are generated; a nuclear magnetic resonance signal due to them coming from an examined object is detected; and various sorts of operations including image reconstruction are effected, starting from the signal thus detected so that the speed of moving object moving in any three-dimensional direction, independently of the slice direction, can be measured by one imaging.
REFERENCES:
patent: 4602641 (1986-07-01), Feinberg
patent: 4609872 (1986-09-01), O'Donnell
Moran et al., "Verification and Evaluation of Internal Flow and Motion", Radiology, vol. 154, No. 2, Feb. 1985.
Sano et al., "Phase Correction Technique in MRI", General Meeting of the Institute of Electronics and Communication Engineers of Japan 1985.
Koizumi Hideaki
Sano Koichi
Sato Shin'ichi
Yokoyama Tetsuo
Chapman John
Hitachi , Ltd.
O'Shea Kevin D.
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