Related Experiment Videos
Electromagnetic flow measurement using a magnetic resonance imaging static field
S M Burns1, T W Barlow, R W Katzberg
1Biomedical Engineering Graduate Group, University of California, Davis 95817, USA.
Academic Radiology
|February 1, 1995
Summary
This study demonstrates that electromagnetic induction can accurately measure blood flow using a modified probe within a magnetic resonance (MR) imaging system. This technique shows promise for in situ flow measurements in humans.
Area of Science:
- Biomedical Engineering
- Medical Imaging
- Fluid Dynamics
Background:
- Electromagnetic flowmeters are standard for animal blood flow measurement.
- Magnetic Resonance (MR) imaging offers advanced visualization capabilities.
Purpose of the Study:
- Investigate the use of a modified probe for electromagnetic induction measurement.
- Assess feasibility within a direct current (DC) magnetic resonance (MR) imaging system.
Main Methods:
- Sheep iliac vessels were used in a saline circuit with a modified probe.
- Measurements were taken within a 2.0-T MR research imaging system.
- Voltage readings correlated with flow rates from 100-400 ml/min.
Main Results:
- A strong correlation (0.937, p < .001) was found between voltage changes and actual flow rates.
- Linear baseline drift was observed within acceptable limits.
Conclusions:
- Electromagnetic induction in conductive fluids can be accurately measured using MR imaging.
- This technique presents opportunities for in situ flow measurements in humans.