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Hybrid active matrix flat panel detector system and method

An array and sensor technology, applied in the field of hybrid detectors and devices for detecting ionizing radiation, can solve the problems of inappropriate efficiency and resolution of X-ray imaging technology

Pending Publication Date: 2019-06-07
THE RES FOUND OF STATE UNIV OF NEW YORK
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Problems solved by technology

In view of the foregoing, it will be appreciated that x-ray imaging techniques based on direct or indirect radiation conversion offer an inappropriate combination of efficiency and resolution

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  • Hybrid active matrix flat panel detector system and method
  • Hybrid active matrix flat panel detector system and method
  • Hybrid active matrix flat panel detector system and method

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[0025] Reference will now be made in detail to various embodiments of the subject matter of the present application, some of which are illustrated in the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0026] refer to figure 2 , the hybrid x-ray imaging sensor 200 according to various embodiments includes a low x-ray attenuating substrate 210, an electronic readout device 220, a first charge blocking layer 230, a photoconductive element 240, a second charge blocking layer 250, a transparent conductive electrode 260 , and a scintillator 270 optically coupled to the photoconductive element 240 .

[0027] The low x-ray attenuating substrate 210, which may provide mechanical support for overlying layers and structures, may be a glass substrate having a thickness of 20 to 100 microns. For example, substrate 210 may be a low barium glass substrate or a polymer substrate. The low x-ray attenuating substra...

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Abstract

A hybrid radiation imaging sensor includes a low x-ray attenuating substrate, a photoconductor disposed over the substrate, and a scintillator disposed over the photoconductor. By combining direct x-ray conversion to electron-hole pairs in the photoconductor with indirect conversion of x-rays downstream of the photoconductor within the scintillator, improved x-ray imaging can be attained through an electronic readout located upstream of both the photoconductor and the scintillator without the need for excessive x-ray dosing.

Description

Background technique [0001] The present invention relates generally to devices and methods for detecting ionizing radiation, and more particularly to hybrid sensors for x-ray imaging. [0002] The field of x-ray imaging underwent a "digital revolution" in the early 2000s with the proliferation of digital radiography (DR) systems based on active matrix flat panel imagers (AMFPIs). Since then, there has been rapid development and clinical translation of large-area AMFPIs based on amorphous silicon (a-Si) active-matrix technology. Due to its compact size, rapid image readout, and excellent image quality, AMFPI is used not only in traditional x-ray imaging modalities, such as general radiography and fluoroscopy, but also in tomographic applications, including cone beam computed tomography (CBCT) and digital tomosynthesis. [0003] Digital x-ray systems provide visual representations of x-ray patterns for dental and medical applications including fluoroscopy, cone beam computed t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/14H01L27/146G01T1/20
CPCG01T1/20G01T1/24H01L27/14676H01L27/1464G01T1/20184H01L27/146A61B6/4233G01T1/246H01L27/14612
Inventor W.赵J.朔伊尔曼A.霍万斯基R.卢宾斯基A.戈尔丹J.斯塔夫罗
Owner THE RES FOUND OF STATE UNIV OF NEW YORK
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