Test pattern device for radiation detector and method of manufac

Details Test pattern device for radiation detector and method of manufac Test pattern device for radiation detector and method of manufac

1981-02-17

1983-12-06

Howell, Janice A.

Radiant energy

Calibration or standardization methods

2505051, 378207, G01D 1800, G02B 500

Patent

active

044195770

ABSTRACT:
A test pattern device for testing scintillation cameras has a radiation transparent body member with internal mercury-filled communicating passages that define a calibrated radiation opaque test pattern. A peripheral passage serves as a mask to outline the useful field of view of the camera crystal, and expansion chambers accommodate changes in mercury volume due to temperature. The body member is made by securing a plastic cover plate to a plastic base molded with grooves to form the test pattern passages and filling ports, and then sealing the filling ports after mercury has been added to fill the passages. The invention avoids the tolerance problems associated with the manufacture of conventional lead test pattern devices.

REFERENCES:
patent: 2936378 (1960-05-01), Jensen
patent: 3011057 (1961-11-01), Anger
patent: 3745345 (1973-07-01), Muehllenhner
patent: 4212061 (1980-07-01), Knoll et al.
patent: 4280047 (1981-07-01), Enos
Grossman et al., "Equally Spaced Parallel-Bar Phanton for Performance Monitoring of Scintillation Cameras", J. Nucl. Med. Tech. (Sep. 1976).
Operating Manual for Scintillation Camera Model 6480-Siemens Gammasonics, Inc. Pub. No. 710-000880/rev. C pp. 5-30 to 5-35.
Operating Manual for Scintillation Camera Model 6478-Siemens Gammasonics, Inc. Pub. No. 710-000650/rev. C pp. 5-90 to 5-98.

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