High Resolution and Sensitivity Digital X-Ray Imager for Mammography

Abstract

A digital x-ray imager with fill-field screen and high resolution (40 micrometers) was developed. By using commercial, off-the-shelf components to the maximum extent, the production cost of the imager was minimized. A 3x3 array of lens/optical detector modules was fabricated and tested. it is one of the four quarters which make up the fill size imager. CMOS detectors were adapted to this purpose and found to have sufficiently low noise. Electronics, including analog, aid, DSP, and IEEE1394 drivers were developed and tested. Software was developed to allow reconstruction of the fill image (5400x3900 pixel) from the segments. Distortion correction and image segment stitching utilized a calibration pattern. Development of the x-ray light valve continued. A resolution of 10 lp/mm was demonstrated on x-ray images.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2000
Accession Number
ADA385845

Entities

People

  • Darold Wobschall

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Breast Cancer
  • Circuit Boards
  • Complementary Metal-Oxide Semiconductors
  • Computer Programs
  • Detection
  • Detectors
  • Digital Images
  • Electronics
  • Health Services
  • High Resolution
  • Image Processing
  • Medical Personnel
  • Production
  • Semiconductor Devices
  • Two Dimensional
  • X Rays

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Integrated Circuit Design and Technology.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems