X-ray tomographic apparatus and method using parallel A/D conver

Details X-ray tomographic apparatus and method using parallel A/D conver X-ray tomographic apparatus and method using parallel A/D conver

1984-08-03

1987-04-07

Smith, Jerry

Boots, shoes, and leggings

G06F 1542

Patent

active

046565841

ABSTRACT:
In an X-ray scanning apparatus, an X-ray detector includes a plurality of detection channels, e.g., 320 channels. Those detection channels are electrically divided into two subchannel groups. Each of those subchannel groups involves a peripheral detection region and a central detection region. An A/D conversion is sequentially performed as follows. An X-ray transmission signal detected in the peripheral channel region is first A/D-converted, and an X-ray transmission signal derived from the central channel region is finally A/D-converted, so that an artifact may be avoided in a resultant tomographic image.

REFERENCES:
patent: 4055767 (1977-10-01), Allemand
patent: 4068306 (1978-01-01), Chen
patent: 4075490 (1978-02-01), Kowalski
patent: 4075491 (1978-02-01), Boyd
patent: 4076985 (1978-02-01), LeMay
patent: 4138611 (1979-02-01), Hounsfield
patent: 4259721 (1981-03-01), Kuznia

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