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US 7,623,619 B2Granted
X-ray CT apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorsTetsuya Sadotomo, Makoto Nakano
Life of this patent
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Abstract
An X-ray CT apparatus that achieves a higher quality of reconstructed CT images by preventing displacements of relative positions of the X-ray tube and the X-ray detector from occurring, including a front side rotation frame configured to mount at least one X-ray tube and at least one X-ray detector facing the X-ray tube, and a rear side rotation frame configured to mount rotation units other than the X-ray tube and the X-ray detector in order to access both sides of the gantry.
Claims12
An X-ray CT apparatus comprising:
- a front-side rotation frame configured to mount at least one X-ray tube for irradiating X-rays through an object and at least one X-ray detector provided at a position facing the X-ray tube in order to detect the irradiated X-rays passing through the object;
- a rear-side rotation frame configured to mount rotation units other than the at least one X-ray tube and the at least one X-ray detector, the other rotation units including at least one high voltage generating unit for supplying a high voltage to the at least one X-ray tube;
- a main frame configured to support the front-side rotation frame and the rear-side rotation frame;
- a plurality of bearing units provided on a circular surface of the main frame at a position between the front-side rotation frame and the rear-side rotation frame and separated so as to form a smaller major diameter than the diameter of the respective side of the rotation frame;
- and
- a frame coupling portion configured to couple the front-side rotation frame and the rear-side rotation frame to the plurality of bearing units.
3 more elements
An X-ray CT apparatus comprising:
- a circular rotation frame;
- a plurality of bearing units provided so as to surround an outer surface of the circular rotation frame;
- and
- a circular main frame configured to support the circular rotation frame through the plurality of bearing units;
- wherein the circular rotation frame includes,
- a front-side annular member configured to mount at least one X-ray tube for irradiating X-rays through an object and at least one X-ray detector provided at a position facing the X-ray tube in order to detect the irradiated X-rays passing through the object,
- a rear-side annular member configured to mount at least one high voltage generating unit for supplying a high voltage to the at least one X-ray tube and rotational units other than the at least one X-ray tube and the at least one X-ray detector, and
- a vertical rib member projected from a surface of a connecting portion of the front-side annular member and the rear-side annular member toward a rotation axis of the rotation frame, the vertical rib member having a center aperture.
5 more elements
Dependencies are inferred from the claim text.