Patent · US Active

Stereo tube attenuation filter

US8180017B2 · kind B2 · utility

11Cited by

14References

37Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Peter Forthmann · Latham, US
Roland Proksa · Hamburg, DE
Axel Thran · Hamburg, DE

Key dates

Filing date	Dec 12, 2008
Grant date	May 15, 2012
Priority date	—
Expiry date	May 10, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2235/086
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A computed tomography apparatus (10) includes spaced radiation sources (82, 84), such as anodes, which each propagate a cone-beam of radiation (40, 50) into an examination region (14). A detector (22) detects radiation which has passed through the examination region. An attenuation system (55) interposed between the radiation sources and the examination region for cone-angle dependent filtering of the cone beams. The attenuation system allows rays which contribute little to a reconstructed image to be attenuated more than rays which contribute more.

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