X-ray CT system with means to expand detector signals by interpo

Details X-ray CT system with means to expand detector signals by interpo X-ray CT system with means to expand detector signals by interpo

1985-09-16

1988-04-26

Smith, Jerry

Boots, shoes, and leggings

378901, 382 54, G06F 1542, A61B 602, G06K 946

Patent

active

047408960

ABSTRACT:
In an X-ray CT apparatus including an X-ray source for irradiating X-rays to an object to be tested; a radiant ray detector for detecting the amount of X-rays transmitted through said object to be tested; a device for rotating the X-ray source and the detector about an axis to produce detection signals corresponding to the amount of transmitted X-rays; a filter for filter processing the detection signal; circuitry for back-projecting the filtering resultant to thereby reproduce a distribution image of X-ray absorption in a cross-section of the object to be tested, and a device for interpolating interpolation values into the detection signals to form expanded signals having an elongated length so that the expanded signals are used for the filter processing.

REFERENCES:
patent: 4178510 (1979-12-01), Wagner
patent: 4275444 (1981-06-01), Ryan
patent: 4284896 (1981-08-01), Stonestrom
patent: 4630307 (1986-12-01), Cok

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