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US 6,876,719 B2Granted
X-ray CT apparatus
AssigneeKabushiki Kaisha Toshiba
InventorMasahiro Ozaki
Life of this patent
Estimating the term…
Abstract
An X-ray CT apparatus includes a plurality of X-ray irradiation sources and a plurality of X-ray detection units. Timing of irradiation of X-ray is shifted by each X-ray irradiation source, the detection unit separately obtains projection data and scatter correction data. In a scatter correction unit, scatter correction is performed based on the projection data and the scatter correction data.
Claims21
An X-ray CT apparatus, comprising:
- a plurality of X-ray irradiation sources configured to rotate around an object and to irradiate X-rays to the object;
- a plurality of X-ray detection units, each of which is positioned opposite each of the plurality of X-ray irradiation sources and configured to detect at least one X-ray penetrated through the object, thereby obtaining projection data and scatter correction data;
- a control unit configured to divide a view cycle into a plurality of sub cycles, to allocate the plurality of sub cycles between obtaining the projection data and the scatter correction data, and to obtain view data by the view cycle based on the projection data and the scatter correction data;
- and
- a reconstruction unit configured to reconstruct an image of the object based on the view data.
2 more elements
An X-ray CT apparatus, comprising:
- a plurality of X-ray irradiation sources configured to rotate around an object and to irradiate X-rays to the object;
- a plurality of X-ray detection units, each of which is positioned opposite each of the plurality of X-ray irradiation sources and configured to detect at least one X-ray penetrated through the object;
- and
- a control unit configured to control the plurality of X-ray irradiation sources and the plurality of X-ray detection units such that at least one of the plurality of X-ray detection units obtains projection data when at least another of the plurality of X-ray detection units obtains scatter correction data.
1 more element
An X-ray CT apparatus, comprising:
- a plurality of X-ray tubes configured to rotate around an object and to irradiate X-rays to the object;
- a plurality of X-ray detection units, each of which is positioned opposite to each of the plurality of X-ray tubes and is configured to detect at least one X-ray penetrated through the object;
- and
- a control unit configured to control the plurality of X-ray tubes and the plurality of X-ray detection units such that at least one of the plurality of X-ray detection units obtains projection data when at least another of the plurality of X-ray detection units obtains scatter correction data.
1 more element
An X-ray CT apparatus, comprising:
- a plurality of X-ray irradiation sources configured to rotate around an object and to irradiate X-rays to the object;
- a plurality of X-ray detection units, each of which is positioned opposite to each of the plurality of X-ray irradiation sources and is configured to detect at least one X-ray penetrated through the object to obtain projection data and scatter correction data;
- a control unit configured to obtain view data by a view cycle, based on the projection data and the scatter correction data;
- and
- a reconstruction unit configured to reconstruct an image of the object based on the view data.
2 more elements
An X-ray CT apparatus, comprising:
- a plurality of irradiating means, rotating around an object, for irradiating X-rays to the object;
- a plurality of detecting means, each of which is positioned opposite to the plurality of irradiating means, for detecting at least one X-ray penetrated through the object to obtain projection data and scatter correction data;
- means for dividing a view cycle into a plurality of sub cycles, for allocating the sub cycle between obtaining the projection data and the scatter correction data, and for obtaining view data by the view cycle, based on the projection data and the scatter correction data;
- and
- means for reconstructing an image of the object based on the view data.
2 more elements
Dependencies are inferred from the claim text.