Analyzing fluid flows within hollow bodies

Radiant energy – Radiation tracer methods – Radioactive tracer methods

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2503562, G21H 502

Patent

active

046970797

ABSTRACT:
Carrier particles, e.g., of metal or metal oxide, are doped with a positron-emitting isotope and injected into fluid flowing in a body, such as a gas turbine engine. The positrons decay on coming to rest, giving two gamma rays which are detected, and a 3D image is built up. The particles are capable of stopping a portion of the positions before they escape from the particles into the surroundings; thus the gamma rays indicate more accurately the position at which the positron was emitted, and give a clearer image.

REFERENCES:
patent: 4338520 (1982-07-01), Stewart
"Precise Tracer Measurements of Liquid and Gas Flow", by Colin G. Clayton, NUCLEON, Jul. 1960, pp. 96-100.
"Three-Dimensional Reconstruction of Lung Perfusion Image with Positron Detection", by Chesler et al, Journal of Nuclear Medicine, vol. 16, No. 1, Jan. 1975, pp. 80-82.
"Microprocessor-Based Flow Measurement Using a Positron Active Tracer", by H. Heusala and R. Myllyla, (1979), vol. 28, No. 4, pp. 321-324. IEEE Transactions on Instrumentation, etc.
"Corrections for Attenuation, Scattered Radiation, and Random Coincidences In a Ring Detector Positron Emission Transaxial Tomograph", by M. Bergstrom et al, IBEE Transactions on Nuclear Science, vol. NS-27, No. 1 Feb. 1980, pp. 549-554.
"Positron-Emission Tomography", by Ter-Pogossian, et al., Scientific America, vol. 243, No. 4 (Oct. 1980), pp. 140, 141, 150, 151.
"The Cern Proportional Chamber Positron Camera", by A. Jeavons, European Organization For Nuclear Research, Cern-EP/79-59, Jun. 15, 1979.
"ECAT: A New Computerized Tomographic Imaging System for Positron-Emitting Radiopharmaceuticals", by Michael E. Phelps, Journal of Nuclear Medicine 19, 1978, pp. 635-647.
"The Measurement of Flow of Liquids and Gases Using Radioactive Isotopes", by C. G. Clayton, Journal of British Nuclear Energy Society, 1964, pp. 252-268.
"The Development of the Rutherford Laboratory MWPC Positron Camera", by J. E. Bateman, et al., Rutherford and Appleton Laboratories, 1980.
"Pulsed Neutron Measurement of Single and Two-Phase Liquid Flow", by P. Kehler, IEEE Trans on Nucl. Science, vol. 26, No. 1, Feb. 1979, pp. 1627-1631.

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