Patent · US Expired

Method and apparatus for exact cone beam computed tomography

US7548603B2 · kind B2 · utility

1Cited by

14References

16Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Claas Bontus · Hamburg, DE
Thomas Kohler · Neuenstadt am Kocher, DE

Key dates

Filing date	Nov 3, 2003
Grant date	Jun 16, 2009
Priority date	—
Expiry date	Dec 14, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S378/901
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a computed tomography method in which an examination zone is irradiated along a helical trajectory by a conical radiation beam. The radiation transmitted by the examination zone is measured by means of a detector unit and therefrom the absorption distribution in the examination zone is reconstructed without approximations. The reconstruction comprises a derivation of the measuring values of parallel rays of different projections, an integration of these values along K lines, a weighting of these values and a back projection.

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