X-ray CT apparatus and image processing apparatus
US7953263B2 · kind B2 · utility
18Cited by
5References
22Claims
0Family size
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Key dates
| Filing date | May 25, 2007 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Mar 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/404
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An X-ray CT apparatus includes a unit which extracts a high-contrast region of comparatively high X-ray attenuation coefficient from an image, units which generate an unsharp image concerning the high-contrast region, on the basis of the position of the extracted high-contrast region and a point spread function peculiar to the apparatus, and a unit which subtracts the unsharp image from the original image in order to generate a low-contrast image concerning a low-contrast region of comparatively low X-ray attenuation coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.