High energy, real time capable, direct radiation conversion X-ray imaging system for Cd-Te and Cd-Zn-Te based cameras

a technology of cd-te and cd-zn-te, which is applied in the field of high energy charge integration imaging devices, can solve the problems of preventing any increase in accuracy, increasing the time of pixel charge integration, and reducing the image frame acquisition rate, so as to achieve high energy and high image frame acquisition rate. , the effect of high energy
US20060011853A1Inactive Publication Date: 2006-01-19OY AJAT LTD
3 Cites 47 Cited by

Patent Information

Authority / Receiving Office
US ¡ United States
Current Assignee / Owner
OY AJAT LTD
Publication Date
2006-01-19
Estimated Expiration
Not applicable ¡ inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A calibrated real-time, high energy X-ray imaging system is disclosed which incorporates a direct radiation conversion, X-ray imaging camera and a high speed image processing module. The high energy imaging camera utilizes a Cd—Te or a Cd—Zn—Te direct conversion detector substrate. The image processor includes a software driven calibration module that uses an algorithm to analyze time dependent raw digital pixel data to provide a time related series of correction factors for each pixel in an image frame. Additionally, the image processor includes a high speed image frame processing module capable of generating image frames at frame readout rates of greater than ten frames per second to over 100 frames per second. The image processor can provide normalized image frames in real-time or can accumulate static frame data for substantially very long periods of time without the typical concomitant degradation of the signal-to-noise ratio.
Need to check novelty before this filing date? Find Prior Art

Description

FIELD OF THE INVENTION

[0001] The present invention is in the field of semiconductor imaging systems for imaging x-ray and gamma ray radiant energy. More specifically, the invention relates to a high energy charge-integrating imaging devices utilizing Cd—Te or Cd—Zn—Te based detector substrates in combination with CMOS readout substrates. Additionally, the invention relates to a process for calibrating such high energy radiation imaging systems. BACKGROUND OF THE INVENTION

[0002] Over the past ten years digital radiation imaging has gradually been replacing conventional radiation imaging for certain applications. In conventional radiation imaging applications, the detecting or recording means is a photosensitive film or an analog device such as an Image Intensifier. Digital radiation imaging is performed by converting radiation impinging on the imaging device (or camera) to an electronic signal and subsequently digitizing the electronic signal to produce a digital image.

[0003] Digi...

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