Method for spatially resolved measurement of blood flow using nuclear magnetic resonance

US5517117A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Edgar Mueller · Heroldsbach, DE
• Richard Hausmann · Erlangen, DE

Key dates

• Filing date: Oct 11, 1994
• Grant date: May 14, 1996
• Expiry date: Oct 11, 2014

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/5673
• WIPO field: Measurement
• WIPO sector: Instruments

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.