Patent · US Active

Movable wedge for improved image quality in 3D X-ray imaging

US8483363B2 · kind B2 · utility

3Cited by

5References

22Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Matthias Bertram · Aachen, DE
Jens Wiegert · Aachen, DE
John F. Vesel · Kirtland, US
David Sowards-Emmerd · San Jose, US
Michael J. Petrilo · Pleasanton, US

Key dates

Filing date	Nov 4, 2008
Grant date	Jul 9, 2013
Priority date	—
Expiry date	Dec 23, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG21K1/10
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

When generating a 3D image of a subject or patient, a cone beam X-ray source (20a, 20b) is mounted to a rotatable gantry (14) opposite an offset flat panel X-ray detector (22a, 22b). A wedge-shaped attenuation filter (24a, 24b) of suitable material (e.g., aluminum or the like) is adjustably positioned in the cone beam to selectively attenuate the beam as a function of the shape, size, and density of a volume of interest (18) through which X-rays pass in order to maintain X-ray intensity or gain at a relatively constant level within a range of acceptable levels.

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