Patent · US Active

Spectrum-preserving heel effect compensation filter made from the same material as anode plate

US8059787B2 · kind B2 · utility

1Cited by

4References

20Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

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

Key dates

Filing date	Jan 23, 2008
Grant date	Nov 15, 2011
Priority date	—
Expiry date	May 13, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2235/18
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

It is described a filter (300) for at least partially compensating for an X-ray tube (10) the target angle heel effect and preserving the tungsten spectrum of the X-rays. The filter (300) has an anode side (302) and a cathode side (304), wherein the cathode side (304) has a higher attenuation coefficient than the anode side (302). The attenuation coefficient is determined to at least partially compensate for the target angle heel effect. The filter (300) is from the same material as an anode plate (110) or the anode (108) of the X-raysource (10) which is usually tungsten or a tungsten alloy.

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