Electricity: measuring and testing – Particle precession resonance – Determine fluid flow rate
Patent
1994-10-11
1996-05-14
O'Shea, Sandra L.
Electricity: measuring and testing
Particle precession resonance
Determine fluid flow rate
1286533, G01R 3320
Patent
active
055171176
ABSTRACT:
For shortening the measuring time to obtain an image identifying blood flow in a subject using magnetic resonance imaging, the number of phase-coding steps is reduced compared to a number of steps required for generating a quadratic observation window, given a constant, maximum amplitude of the phase-coding gradient. The reduction is to such an extent that only the blood vessel under observation is essentially acquired in phase-coding direction. Neighboring regions are saturated in order to avoid image artifacts. Given a correspondingly low number of phase-coding steps, a measurement of blood flow is possible in real-time presentation or, given an ECG triggered measuring sequence, a measurement of blood flow is possible in a greatly shortened overall measuring time.
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Hausmann Richard
Mueller Edgar
Mah Raymond Y.
O'Shea Sandra L.
Siemens Aktiengesellschaft
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