Method for the acquisition of images of a body by the rotational positioning of a radiology device, notably an angiography device
US5699446A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1994 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | May 17, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/70
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
To acquire the images around an elongated object, the direction of this object is identified. To this end, in a first image, a point constituting an image of a locus of the object is designated and localized. The image of the epipolar straight line that connects the focal spot of the X-ray tube to the localized point is plotted in the second image. In this image of the epipolar straight line, a point homologous to the point in the first image is designated and localized. From the localizations of these points, the position in space of the characteristic point is deduced. This operation is reiterated for a second characteristic locus. The orientation of the object is deduced from these two characteristic loci. The position of the imaging device is then set accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.