Design and theoretical investigation of a digital x-ray detector with large area and high spatial resolution

Jianbao Gui; Jinchuan Guo; Qinlao Yang; Xin Liu; Hanben Niu

doi:10.1117/12.741290

1 May 2007 Design and theoretical investigation of a digital x-ray detector with large area and high spatial resolution

Jianbao Gui, Jinchuan Guo, Qinlao Yang, Xin Liu, Hanben Niu

Proceedings Volume 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine; 65342A (2007) https://doi.org/10.1117/12.741290
Event: Fifth International Conference on Photonics and Imaging in Biology and Medicine, 2006, Wuhan, China

Abstract

X-ray phase contrast imaging is a promising new technology today, but the requirements of a digital detector with large area, high spatial resolution and high sensitivity bring forward a large challenge to researchers. This paper is related to the design and theoretical investigation of an x-ray direct conversion digital detector based on mercuric iodide photoconductive layer with the latent charge image readout by photoinduced discharge (PID). Mercuric iodide has been verified having a good imaging performance (high sensitivity, low dark current, low voltage operation and good lag characteristics) compared with the other competitive materials (α-Se,PbI₂,CdTe,CdZnTe) and can be easily deposited on large substrates in the manner of polycrystalline. By use of line scanning laser beam and parallel multi-electrode readout make the system have high spatial resolution and fast readout speed suitable for instant general radiography and even rapid sequence radiography.

Citation Download Citation

Jianbao Gui, Jinchuan Guo, Qinlao Yang, Xin Liu, and Hanben Niu "Design and theoretical investigation of a digital x-ray detector with large area and high spatial resolution", Proc. SPIE 6534, Fifth International Conference on Photonics and Imaging in Biology and Medicine, 65342A (1 May 2007); https://doi.org/10.1117/12.741290

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