Methods and apparatus for fast CT imaging helical weighting
US6341154B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Jun 24, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S378/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In one embodiment, the present invention is a method for reconstructing a computed tomographic image of an object that includes steps of: helically scanning an object with a multislice CT imaging system to collect projection data; identifying a center view of the collected projection data; performing an operation selected from the group of helical interpolation and helical extrapolation on the collected projection data to produce super-views of the object; weighting an angular range of the super-views with normalized helical weights, the normalized helical weights being dependent upon whether interpolation or extrapolation was performed; and backprojecting the weighted super-views to produce a reconstricted image of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.