Thesis
A nuclear magnetic resonance flowmeter
Master of Science (M.S.), Drexel Institute of Technology
Jun 1965
DOI:
https://doi.org/10.17918/00003649
Abstract
[From preface] There is a need for a meter to monitor biological flows. A method is presented here for monitoring these flows using the principles of Nuclear Magnetic Resonance. The flowing sample is placed in an external magnetic field which causes the nuclei of the sample material to precess in much the same way as a gyroscope precesses in a gravitational field. If the sample is flowing through a coil of wire, nuclear magnetic resonance will occur when the excitation frequency of the coil is equal to the precessional frequency of the nuclei. The height of the resonance peak is related to sample flow velocity. Consider the problem of monitoring the flow of blood in one of the body extremities, say the finger. The sample coil would be wrapped about the finger and the coil and finger would be placed between the pole pieces of a magnet. A tourniquet temporarily applied would establish the static height of the resonance curve so that when the tourniquet was released, the change in the height of the resonance curve would give an indication of flow rate. Notice that the measurement of blood flow could be accomplished without breaking the skin.
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Details
- Title
- A nuclear magnetic resonance flowmeter
- Creators
- Bruce Allen Eisenstein
- Awarding Institution
- Drexel Institute of Technology
- Degree Awarded
- Master of Science (M.S.)
- Publisher
- Drexel Institute of Technology; Philadelphia, Pennsylvania
- Number of pages
- 32 pages
- Resource Type
- Thesis
- Language
- English
- Academic Unit
- Electrical Engineering (-1970); Drexel Institute of Technology (1936-1970); College of Engineering (and Science) (1945-1970)
- Other Identifier
- 991021887548804721