Electricity: measuring and testing – Particle precession resonance – Determine fluid flow rate
Patent
1996-08-01
1997-07-29
Arana, Louis M.
Electricity: measuring and testing
Particle precession resonance
Determine fluid flow rate
324309, G01V 300
Patent
active
056525133
ABSTRACT:
When a magnetic resonance imaging sequence is retrieved from memory (58), one of the slice select, phase-encode to read gradient profiles are retrieved for one of the slice select, phase-encode, read gradients. The two gradient profiles have a common field of view if a read gradient or slice thickness if a slice select gradient, but have different motion sensitizations. The reference gradient profile G.sub.1 stored in a memory (52) and the motion sensitized gradient profile G.sub.2 stored in a memory (56) are weighted (60, 62) by weighting functions .alpha..sub.1, .alpha..sub.2 which are selected in accordance with the selected motion sensitivity and a selected one of the field of view or slice thickness. The weighted profiles are combined (64) to generate a motion sensitized gradient with the selected motion sensitivity, field of view or slice thickness. The combined weighted gradient profile and the reference gradient profile are used in imaging sequences to generate reference and motion sensitized data lines (82, 84) which are reconstructed (86) into a reference image representation and a motion sensitized image representation. A moving tissue only image representation can be obtained (88) as well.
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Liu Haiying
Margosian Paul M.
Xu Yansun
Arana Louis M.
Picker International Inc.
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