Patent · US Active

Correction of artifacts caused by the heel effect

US7724935B2 · kind B2 · utility

6Cited by

6References

20Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Udo Van Stevendaal · Ahrensburg, DE
Thomas Kohler · Neuenstadt am Kocher, DE

Key dates

Filing date	Dec 6, 2004
Grant date	May 25, 2010
Priority date	—
Expiry date	Sep 15, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG06T11/005
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for processing polychromatic attenuation values, wherein the polychromatic attenuation values are acquired by means of a polychromatic source of radiation generating a cone beam and radiation detector array with a plurality of detector rows, wherein the plurality of detector rows are arranged adjacent to each other in a first direction perpendicular to a second direction, wherein the second direction is parallel to the plurality of detector rows, the method comprising the step of: assigning the monochromatic attenuation values to polychromatic attenuation values, wherein the polychromatic attenuation values depend on the first direction and a three-dimensional look-up table is used for assigning the monochromatic attenuation values to the polychromatic attenuation values.

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