Mr. Nader Safavian Profile

Nader Safavian

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Author

Publications (7)

Proceedings Article | 23 March 2010 Paper

Electronic noise comparison of amorphous silicon current mode and voltage mode active pixel sensors for large area digital x-ray imaging

Dali Wu, Nader Safavian, Mohammad Yazdandoost, Mohammad Hadi Izadi, Karim Karim

Proceedings Volume 7622, 76223Q (2010) https://doi.org/10.1117/12.845561

KEYWORDS: Amorphous silicon, Amplifiers, Sensors, Interference (communication), Active sensors, Transistors, Capacitance, Capacitors, Electrons, Surgery

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Proceedings Article | 23 March 2010 Paper

Performance of a prototype amorphous silicon active pixel sensor array using a-Se for direct x-ray conversion

M. Izadi, O. Tousignant, M. Mokam, M. Yazdandoost, N. Safavian, H. Mani, L. Laperriere, K. Karim

Proceedings Volume 7622, 76223V (2010) https://doi.org/10.1117/12.845528

KEYWORDS: X-rays, Sensors, Imaging systems, Amorphous silicon, Signal to noise ratio, Prototyping, X-ray imaging, Amplifiers, Modulation transfer functions, Active sensors

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Proceedings Article | 22 March 2010 Paper

Investigation of gain non-uniformities in the two TFT current programmed amorphous silicon active pixel sensor for fluoroscopy, chest radiography, and mammography tomosynthesis applications

Nader Safavian, M. Yazdandoost, D. Wu, M. Izadi, K. Karim, J. Rowlands

Proceedings Volume 7622, 76221N (2010) https://doi.org/10.1117/12.845592

KEYWORDS: Amplifiers, Fluoroscopy, Sensors, X-rays, Amorphous silicon, Active sensors, Temperature metrology, Mammography, Computer programming, Chest

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Proceedings Article | 19 March 2010 Paper

Photon counting pixel and array in amorphous silicon technology for large area digital medical imaging applications

Mohammad Yazdandoost, Kyung Shin, Nader Safavian, Farhad Taghibakhsh, Karim Karim

Proceedings Volume 7622, 76221A (2010) https://doi.org/10.1117/12.844420

KEYWORDS: Amorphous silicon, Sensors, Transistors, Oscillators, Photon counting, Medical imaging applications, X-rays, Medical imaging, Capacitors, Computer architecture

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Proceedings Article | 16 March 2009 Paper

Characterization of bias induced metastability of amorphous silicon thin film transistor based passive pixel sensor switch and its impact on biomedical x-ray imaging application

Afrin Sultana, N. Safavian, M. Izadi, K. Karim, J. Rowlands

Proceedings Volume 7258, 72583Q (2009) https://doi.org/10.1117/12.812282

KEYWORDS: Imaging systems, Sensors, Switches, Biomedical optics, Amorphous silicon, X-ray imaging, Proteins, Thin films, Transistors, Crystallography

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Proceedings Article | 13 March 2009 Paper

Characterization of current programmed amorphous silicon active pixel sensor readout circuit for dual mode diagnostic digital x-ray imaging

Nader Safavian, M. Yazdandoost, D. Wu, A. Sultana, M. Izadi, K. Karim, A. Nathan, J. Rowlands

Proceedings Volume 7258, 725815 (2009) https://doi.org/10.1117/12.813886

KEYWORDS: Computer programming, X-rays, Sensors, Amorphous silicon, Imaging systems, Capacitors, Capacitance, Active sensors, Transistors, Signal to noise ratio

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Proceedings Article | 14 October 2005 Paper

TFT active image sensor with current-mode readout circuit for digital x-ray fluoroscopy

Nader Safavian, G. R. Chaji, A. Nathan, J. A. Rowlands

Proceedings Volume 5969, 596929 (2005) https://doi.org/10.1117/12.629811

KEYWORDS: Amplifiers, Computer programming, X-rays, Fluoroscopy, X-ray imaging, Image sensors, Digital electronics, Error analysis, Sensors, Interference (communication)

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Showing 5 of 7 publications

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