Deflection-equipped ct system with non-rectangular detector cells

a detector cell, non-rectangular technology, applied in tomography, applications, instruments, etc., can solve the problems of system dqe degradation, system dqe degrade, and image quality degradation
US20070248208A1Inactive Publication Date: 2007-10-25GENERAL ELECTRIC CO
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
GENERAL ELECTRIC CO
Publication Date
2007-10-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

A CT system is constructed to have diagonally oriented perimeter walls of its detector cells. A CT detector comprised of such detector cells has improved spatial coverage (spatial density) and is better equipped for operation with focal spot deflecting x-ray sources. The number of detector channels is also not increased despite the increase in spatial coverage. Moreover, the detector cells can be constructed without much variance from conventional fabrication techniques.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application is a continuation-in-part of U.S. Ser. No. 11 / 379,407, filed on Apr. 20, 2006, the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION

[0002] The present invention relates generally to CT imaging systems and, more particularly, to a CT detector with non-rectangular detector cells and to imaging systems and methodologies employing such detectors.

[0003] In conventional multi-row CT detectors, a two dimensional array of detector cells extend in both the x and z directions. Moreover, in conventional detectors, each cell of the array is constructed to have a rectangular-shaped active area. This active area is generally perpendicular to a plane of x-ray source rotation and, in the context of energy integrating scintillators, converts x-rays to light. The light emitted by each scintillator is sensed by a respective photodiode and converted to an electrical signal. The amplitude of the electrica...

Claims

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