Fabrication and Characterization of Frisch Gridded Selenium Device

Amorphous selenium direct detection X-ray detectors coupled to amorphous silicon readout circuits provide the best spatial resolution and are the leading technology for the worldwide breast cancer imaging market.  However, they are relatively slow and noisy leading to higher X-ray dose requirements for the emerging and highly accurate modality of 3D breast imaging.  We plan to develop high speed, low noise digital imagers that can leverage the spatial resolution advantages of existing a-Se detector technology.  The results of this research will help create a product that can directly benefit the Ontario economy as well as improving breast cancer screening worldwide.  A breakthrough result of this nature will promote the training of future scientists and engineers in the medical imaging, information technology, photonics, and manufacturing industries.  These highly skilled personnel are essential to maintain Ontario’s technological advantage in the future and especially for Ontario companies like DALSA Imaging.

Faculty Supervisor:

Dr. Karim S. Karim


Shaikh Hasibul Majid



Engineering - computer / electrical


Life sciences


University of Waterloo



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