Nuclear image display controller

Details Nuclear image display controller Nuclear image display controller

1981-07-01

1985-01-29

Thomas, James D.

Boots, shoes, and leggings

128659, 250363S, 340706, 340723, 340798, 358 11, 378901, 382 6, G06F 1542

Patent

active

044970242

ABSTRACT:
In a nuclear imaging system the digitized x and y coordinates of gamma ray photon emission events address memory locations corresponding to the coordinates. The respective locations are incremented each time they are addressed so at the end of a selected time or event count period the locations contain digital values or raw data corresponding to the intensity of pixels comprising an image frame. The raw data for a frame is coupled to one input of an arithmetic logic unit (ALU) whose output is coupled to a display controller memory. The output of the controller memory is coupled to another ALU input with a feedback bus and is also coupled to a further signal processing circuit which includes means for converting processed data to analog video signals for television display. The ALU is selectively controlled to let raw image data pass through to the display controllor memory or alternately to add (or subtract) raw data for the last image frame developed to the raw data for preceding frames held in the display controller to thereby produce the visual effect on the television screen of an isotope flowing through anatomy.

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Bacharach, Green, Borer, Douglas, Ostrow, Johnston, "A Real-Time System for Multi-Image Gated Cardiac Studies", Journal of Nuclear Medicine, vol. 18, No. 1, pp. 79-84, Jan. 1977.
Williams, Morgan, Davies, "A System for ECG Synchronized Gamma Camera Studies", Phys. Med. Biol., Sep. 1980, vol.25, No. 5, pp. 935-940.
Shibayama, Iwata, "Data Processing System With a Slave Computer", European Patent Application, publ. No. 0021365, Jan. 1981.

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