Abstract: A scintillation camera is suspended from an elevated gantry and is laterally movable. Sensors detecting the lateral position of the scintillation camera detector head produce signals which are combined with the detector head output signals to produce an image reflecting the occurrence of radioactive events within an expanded rectilinear field of view of the detector head. This image is stored using a recording medium.
Type:
Grant
Filed:
May 12, 1975
Date of Patent:
April 26, 1977
Assignee:
G. D. Searle & Co.
Inventors:
Ronald E. Turcotte, Jay R. Wolff, Anthony P. Del Medico, Paul C. Lee
Abstract: A radiation analyzer which measures radiation from a plurality of radiation sources in a single measurement cycle to distinguish between the radioactivity level received from a plurality of radiation sources. The radiation level of one of the sources may be known so that that source serves as a radiation standard with which to compare the other sources. Alternatively, the sources may all be known and the comparative radioactivity levels utilized to obtain information concerning some other parameter, such as external attenuation.
Type:
Grant
Filed:
December 5, 1974
Date of Patent:
June 29, 1976
Assignee:
G. D. Searle & Co.
Inventors:
John B. Ashe, Peter F. Berry, James D. Hall
Abstract: A radiation analyzer which employs a single photodetector and a plurality of scintillators. Light filters interposed between selected ones of the scintillators selectively attenuate radiation of a predetermined energy range. Plural analyzers each associated with a single scintillator and each receiving electrical pulses from the photodetector attenuated to a different degree are adjusted to tabulate pulses of amplitudes which differ in accordance with the degree of attenuation of pulses received by the analyzers from the photodetector.
Type:
Grant
Filed:
December 5, 1974
Date of Patent:
June 29, 1976
Assignee:
G. D. Searle & Co.
Inventors:
John B. Ashe, Peter F. Berry, James D. Hall
Abstract: Automatic liquid scintillation counting apparatus including a scintillating medium in the elevator ram of the sample changing apparatus. An appropriate source of radiation, which may be the external source for standardizing samples, produces reference scintillations in the scintillating medium which may be used for correction of the gain of the counting system.
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