Attenuator for providing a test image from a radiation source

Details Attenuator for providing a test image from a radiation source Attenuator for providing a test image from a radiation source

1981-06-15

1984-07-17

Smith, Alfred E.

Radiant energy

Radiation controlling means

2502521, 378207, G01D 1800

Patent

active

044608322

ABSTRACT:
A nuclear radiation attenuator for providing a test image from a source of radiation is disclosed. The attenuator provides a test image including a plurality of discrete target images located in a background image. Each target image has an intensity that differs from the intensity background image to provide a target to background contrast ratio for each target image. A plurality of the target images each have a different contrast ratio so that the contrast ratios of the target simulate contrast ratios found in clinical testing. The attenuator provides a standardized test image that enables the performance of a scintillation camera to be tested routinely.

REFERENCES:
patent: 1953249 (1934-04-01), Michel
patent: 4055771 (1977-10-01), Goodenough et al.
patent: 4126789 (1978-11-01), Vogl et al.
patent: 4280047 (1981-07-01), Enos
Murray et al., "A New Phantom for the Assessment of Nuclear Medicine Imaging Equipment", Phy. Med. Biol., 24 (1), Jan. 1979, pp. 188-192.
"Quality Control for Scintillation Cameras", HEW Pub. (FDA) 76-8046, Jun. 1976.

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