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Primary Examiner: Dixon, Harold A.
Assistant Examiner:
Attorney: Trifari; Frank R., Steckler; Henry I.

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Title: Automatic system for continuously calibrating a gamma camera

Abstract: A circuit for continuously recalibrating a gamma camera having a plurality of photomultipliers and signal channels which are weighted to control X and Y deflection on the display. Variation in signal channel gain is controlled and cancelled.

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Inventors: Auphan, Michel Joseph (Paris, FR)

Application Number: 613622
Filing Date: 1975-09-15
Publication_date: 1977-09-06
Assignee: U.S. Philips Corporation (New York, NY)
Primary Class(es): 250/354.1 250/363.01, 250/363.09
Other Classes:
US Patent Ref:

3428804	Feb, 1969	Comunnetti	250/252.
3560744	Feb, 1971	Jordan	250/252.
3714441	Jan, 1973	Kreda	250/207.
3732420	May, 1973	Brunnett	250/363.
3922541	Nov, 1975	Seeman	250/252.

Other Refs: Other References: "An Electronically Gated Gamma & X-Ray Calibration Scheme" by Forrest et al., Nuclear Inst. vol. 101, No. 3, 1972 pp. 567-572.