21st Canadian Conference on Electrical and Computer Engineering
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The Wonders of Technology May 4-7, 2008
Sheraton Fallsview
Niagara Falls
Ontario, Canada

Tutorial E: Large Area Digital Imaging Technology

Sunday Afternoon, May 4
1 p.m. - 4 p.m.
Ontario Room

Presented by

Prof. Karim Karim - Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ontario, Canada


This short course covers major aspects of the design and fabrication of digital imaging circuits and devices used in imaging applications while focusing on digital radiography (DR). The course provides an understanding of the scientific principles, physics and engineering technology that provide the basis by which images are acquired in digital imaging. The integrated solid state image sensor technology to be discussed appears in a wide variety of applications ranging from digital cameras for optical imaging to active matrix flat panel X-ray imagers.

Learning Outcomes

This course will enable you to:
  • refresh your knowledge on the absorption of light in semiconductors, the physics of X-ray production, X-ray emission and interactions with matter
  • learn about radiographic imaging materials and methods including phosphors, scintillators and direct X-ray converters e.g. selenium, PbO
  • understand the physics of imaging devices including CCDs, photodiodes, phototransistors, charge injection devices, charge modulation devices, and MSM devices
  • analyze active and passive pixel circuits, current mode, voltage mode, logarithmic, on-pixel A/Ds, and photon counting pixels
  • predict imaging array operation via performance figures of merit including resolution, speed, modulation transfer function, noise power spectrum, detective quantum efficiency, random electronic noise, fixed pattern noise, and photoresponse non-uniformity

Intended Audience

This course is designed for anyone who wants to extend their understanding of digital imaging and commercially available state-of-the-art large area digital imagers. It is of value to engineers, physicists and others involved in the design, production, evaluation or purchase of digital imaging equipment.

Presenter's Biography

Karim S. Karim joined the Department of Electrical and Computer Engineering at the University of Waterloo as an Assistant Professor in 2007. Prior to this, he was an Assistant Professor in the School of Engineering Science at Simon Fraser University from 2003 - 2007. He has been involved with the design of large area digital x-ray imagers for medical imaging applications since 1999.

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