X-ray or gamma ray systems or devices – Electronic circuit – Exposure timer
Patent
1987-10-13
1989-04-18
Church, Craig E.
X-ray or gamma ray systems or devices
Electronic circuit
Exposure timer
378 7, H05G 164
Patent
active
048233706
ABSTRACT:
An X-ray generator projects X-rays into an object under examination. An X-ray detector detects the X-ray image data transmitted through the object. The transmitted X-ray image data is digitized by an A/D converter and visually displayed by a monitor. For effecting such display, an X-ray shield member having an X-ray shield section configured in a predetermined pattern is set in an X-ray projection area. The transmitted X-ray image data containing the X-ray shield section data obtained under this condition is supplied to a scattered X-ray intensity computing circuit through first and second switching circuits and a memory. The computing circuit computes the scattered X-ray component. Then, the X-ray shield member is retracted from the X-ray projection area. Under this condition, the transmitted X-ray image data is supplied through the first and second switching circuits to a subtracting circuit. The substracting circuit subtracts the scattered X-ray component previously obtained from the transmitted X-ray image data, thereby to send only the primary X-ray component to the monitor.
REFERENCES:
patent: 2336026 (1943-12-01), Millenaar
patent: 2679008 (1953-05-01), Hall
patent: 3860821 (1975-01-01), Barrett
patent: 4087837 (1978-05-01), Geluk
patent: 4114041 (1978-09-01), Oliver
patent: 4286156 (1979-05-01), Wagner
patent: 4380817 (1983-04-01), Harding et al.
patent: 4380818 (1983-04-01), Pfeiler
patent: 4399547 (1983-08-01), Riederer et al.
patent: 4549307 (1985-10-01), Macovski
patent: 4550419 (1985-10-01), Aichinger et al.
patent: 4599742 (1986-07-01), Kikuchi et al.
patent: 4656650 (1987-04-01), Kikuchi et al.
Ser. No. 016,129, 02/18/87.
Ser. No. 673,792, 11/21/84.
Ser. No. 792,855, 10/30/85.
Ser. No. 857,050, 04/29/86.
Church Craig E.
Kabushiki Kaisha Toshiba
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