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28 June 2001 Flat x-ray image intensifer system for real-time fluoroscopy
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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.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hiroshi Onihashi, Hiroshi Aida, Kiyumi No, Takashi Noji, Yuichi Murakoshi, Kenichi Ito, Keiichi Saito, and 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);

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