28 June 2001 Flat x-ray image intensifer system for real-time fluoroscopy
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Abstract
We have developed new X-ray image intensifier (Flat II) system using a large-area electron multiplier for real-time fluoroscopy. This paper describes the development of prototype Flat II that has been carried out recently. The heart of new prototype is the multiplier with a smaller channel pitch (0.2 mm) located adjacent to a photo-cathode. We performed reduction of the channel pitch of multiplier, and the optimization of the geometrical arrangement- a photo-cathode, a multiplier and an output phosphor screen in order to improve the performance of Flat II. Moreover, we discuss the spatial aliasing associated with a pitch pattern of multiplier and CCD camera. Finally, physical characteristics such as modulation transfer function (MTF), etc. are discussed.
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Hiroshi Onihashi, Hiroshi Aida, Kiyumi No, Takashi Noji, Yuichi Murakoshi, Kenichi Ito, Keiichi Saito, Junsuke Koma, "Flat x-ray image intensifer system for real-time fluoroscopy", Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); doi: 10.1117/12.430874; https://doi.org/10.1117/12.430874
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