X-ray diagnostic apparatus for eliminating scattered X-ray compo

Details X-ray diagnostic apparatus for eliminating scattered X-ray compo X-ray diagnostic apparatus for eliminating scattered X-ray compo

1985-04-02

1987-04-07

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 99, H05G 164, G01N 2300

Patent

active

046566503

ABSTRACT:
In an X-ray diagnostic apparatus, it is very desirable to mitigate the adverse effect of the scattered X-ray components. When the X-ray shield member is positioned in the X-ray projection area during the first X-ray projection period, the first X-ray transmission image data is obtained. From this X-ray transmission image data, the scattered X-ray component data is calculated in the interpolation method of a SINC function. When the X-ray shield member is removed from the X-ray projection area during the second X-ray projection period, the second X-ray transmission image data is obtained that includes not only the primary X-ray components but also the scattered X-ray components. The desirable X-ray transmission image data is obtained by subtracting the first image data from the second image data.

REFERENCES:
patent: 4286156 (1981-08-01), Wagner
patent: 4380818 (1983-04-01), Pfeiler
patent: 4549307 (1985-10-01), Macovski

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