X-ray imaging apparatus

Details X-ray imaging apparatus X-ray imaging apparatus

2009-05-19

2009-12-29

Kiknadze, Irakli (Department: 2882)

X-ray or gamma ray systems or devices

Beam control

C378S150000

Reexamination Certificate

active

07639787

ABSTRACT:
When a tabletop is rolling, an aperture specifying unit calculates an aperture of diaphragm blades such that a radiation field is to be R′ based on a rolling angle, where R′ is a radiation field having the same radiation area of X-rays after tabletop rolling as a radiation area before the tabletop rolling. The aperture specifying unit instructs a beam-limit control unit to take the calculated aperture of the diaphragm blades in an X-ray beam limiting device. Then, the beam-limit control unit controls the aperture of the diaphragm blades such that the radiation field is to be R′.

REFERENCES:
patent: 5734692 (1998-03-01), Seki
patent: 6470068 (2002-10-01), Cheng
patent: 6819736 (2004-11-01), Bruder et al.
patent: 7187752 (2007-03-01), Kotler et al.

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