Patent · US Expired

Computed tomography method

US6426989B2 · kind B2 · utility

21Cited by

0References

7Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Michael Grass · Hanstedt, DE
Thomas Koehler · Norderstedt, DE
Roland Proksa · Hamburg, DE

Key dates

Filing date	Apr 23, 2001
Grant date	Jul 30, 2002
Priority date	—
Expiry date	Apr 23, 2021

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 which involves a conical radiation beam which irradiates the examination zone along at least two trajectories that are offset relative to one another in the direction of the axis of rotation, the distance between the trajectories being chosen to be so large that voxels in an intermediate region are not completely irradiated neither in one trajectory nor in the other trajectory. The absorption distribution in this intermediate region can be reconstructed without loss of image quality when measuring data from both trajectories are combined.

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