Computed tomography with iterative reconstruction of thin cross-sectional planes
US6002739A · kind A · utility
100Cited by
10References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Apr 28, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S378/901
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cone-beam tomographic system in which computation speed is improved by reducing the reconstructed images to thin planes. Reducing the images to thin planes reduces the number of picture elements to be computed, and reduces basis functions to a simple function of the angle of a ray relative to a plane. In a variation, computation speed is further improved by making pixel size inversely proportional to the distance of a plane from an emissions source. As a result of the variable pixel size, for each projection, a ray intersecting the center of a sensor element intersects the center of exactly one pixel in each object plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.