X-ray computed tomography apparatus

Details X-ray computed tomography apparatus X-ray computed tomography apparatus

1987-05-04

1989-02-21

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 378 19, G01T 120, G21F 504

Patent

active

048072672

ABSTRACT:
An X-ray computed tomography apparatus is disclosed which includes an X-ray source for irradiating an X-ray, a main detector section for detecting the X-ray passed through a subject and a scattering ray detector for detecting its scattered component. An X-ray shield member is detachably mounted between the X-ray source and the main detector section to shield the main X-ray. The apparatus thus manufactured evaluates a ratio between an amount of scattered component incident on the main detector section when the main X-ray is shielded from the X-ray shield member and an amount of scattered component which is detected by the scattering ray detector. With this ratio placed as K, an amount of X-ray, m, to be measured is found from

REFERENCES:
patent: 4286156 (1981-08-01), Wagner
patent: 4653080 (1987-03-01), Kikuchi
patent: 4688242 (1987-08-01), Ema

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