Filter unit, X-ray tube unit, and X-ray imaging system
AssigneeGE Medical Systems Global Technology Company, LLC
InventorPing Yuan
Life of this patent
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Abstract
A small-sized filter unit of a simple structure, as well as an X-ray tube unit and an X-ray imaging system both having the filter unit, are implemented. A filter unit in a first aspect of the present invention comprises a filter plate, the filter plate having a first filter, a second filter disposed in a first direction with respect to the first filter and a third filter disposed in a second direction having a predetermined angle from the first direction with respect to the first filter, a guide plate having a guide frame for movement of the filter plate in the first and second directions, and a drive device for moving the filter plate.
Claims20
A filter unit comprising:
- a filter plate comprising a first filter, a second filter disposed in a first direction with respect to the first filter, and a third filter disposed in a second direction having a predetermined angle from the first direction;
- a guide plate comprising a guide frame for movement of the filter plate in the first direction and the second direction;
- and
- a drive device configured to move the filter plate.
An X-ray tube unit having an X-ray tube, a collimator and a filter unit, the filter unit comprising:
- a filter plate comprising a first filter, a second filter disposed in a first direction with respect to the first filter, and a third filter disposed in a second direction having a predetermined angle from the first direction;
- a guide plate comprising a guide frame for movement of the filter plate in the first direction and the second direction;
- and
- a drive device configured to move the filter plate.
An X-ray imaging system for radiating X-ray to a subject from an X-ray tube unit and picking up a transmitted image, the X-ray tube unit comprising:
- an X-ray tube;
- a collimator;
- and
- a filter unit comprising:
- a filter plate comprising a first filter, a second filter disposed in a first direction with respect to the first filter, and a third filter disposed in a second direction having a predetermined angle from the first direction;
- a guide plate comprising a guide frame for movement of the filter plate in the first direction and the second direction;
- and
- a drive device configured to move the filter plate.
Dependencies are inferred from the claim text.