Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-layer direct conversion computed tomography detector module

A tomography and computer technology, applied in the field of multi-layer direct conversion computed tomography detectors, can solve the problems of non-optimized detector dead time and reduced detector energy resolution, etc.

Active Publication Date: 2007-01-10
GENERAL ELECTRIC CO
View PDF0 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for stacked detector structures with multiple thin layers, good small pixels can no longer be achieved with conventional simple pixelated anodes if the pixel contact size is comparable to or larger than the detector thickness
Thus, the energy resolution of the detector can be greatly reduced
Also, the detector dead time may not be optimal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-layer direct conversion computed tomography detector module
  • Multi-layer direct conversion computed tomography detector module
  • Multi-layer direct conversion computed tomography detector module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Conventional CT imaging systems employ detectors that convert radiographic energy into electrical current signals that are integrated over a period of time, then measured and eventually digitized. A disadvantage of such detectors is however that they cannot provide data or feedback on the number and / or energy of detected photons. In addition, energy discriminating, direct conversion detectors are capable of not only counting x-rays but also providing energy level measurements for each x-ray detected. A disadvantage of these direct conversion semiconductor detectors, however, is that these types of detectors cannot count the X-ray photon flux rates typically encountered with conventional CT systems. In addition, extremely high X-ray photon flux rates are known to induce stacking and polarization, which eventually lead to detector saturation. In other words, these detectors typically saturate at relatively low threshold x-ray flux levels. There is therefore a need to de...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A computed tomography detector module is presented. The detector module includes a substrate having a topside and a bottom side. Additionally, the detector module includes a plurality of detector layers disposed on the top side of the substrate in a direction that is substantially orthogonal to the substrate, where each of the plurality of detector layers comprises a direct conversion material configured to absorb radiation, and where each of the plurality of detector layers comprises a first side and a second side. Further, the detector module includes a plurality of pixelated anode contacts is disposed on the first side of each of the plurality of detector layers. Also, the detector module includes a common cathode contact is disposed on the second side of each of the plurality of detector layers.

Description

technical field [0001] The present invention relates generally to radiographic detectors for diagnostic imaging, and more particularly to multilayer direct conversion computed tomography (CT) detectors for high throughput imaging using photon counting and energy discrimination. Background technique [0002] Radiographic imaging systems, such as X-rays and computed tomography (CT), have been used to view the interior of objects in real time. Typically, the imaging system includes an x-ray source for emitting x-rays at an object of interest, such as a patient or a piece of luggage. A detection device, such as an array of radiation detectors, is located on the other side of the object and is used to detect X-rays emitted through the object. As will be appreciated, the intensity of the attenuated beam of radiation received at the detector array generally depends on the attenuation of x-rays by the object. Each detector element of the detector array is used to generate an indep...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03G01T1/161
CPCG01T1/249G01T1/243G01T1/2985G01T1/242G01T1/241
Inventor J·E·特卡茨伊克J·W·勒布朗W·李D·J·沃尔特Y·杜
Owner GENERAL ELECTRIC CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com