Patent · US Expired

Retrospective and/or window-controlled filtering of images for adapting sharpness and noise in computed tomography

US6901130B2 · kind B2 · utility

5Cited by

6References

45Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Bruder · Hemhofen, DE
Thomas Flohr · Uehlfeld, DE
Rainer Raupach · Heroldsbach, DE
Stefan Schaller · Ergolding, DE

Key dates

Filing date	Aug 21, 2003
Grant date	May 31, 2005
Priority date	—
Expiry date	Nov 18, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S378/901
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method is for window-controlled filtering of CT images. A CT raw data record is acquired, for example, with the aid of a CT unit or of a C-arc unit. A primary data record is then reconstructed from the CT raw data record by way of, for example, a sharp convolution core and, for example, a narrow slice sensitivity profile. A transfer function is then provided as functional relationship between window width and image sharpness. The image sharpness of the CT image of a selected slice is then automatically calculated, situated in the primary data record, as a function of a selected window width for the selected slice by way of an image processing procedure on the basis of the transfer function.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.