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Proceedings Paper

Flat x-ray image intensifer system for real-time fluoroscopy
Author(s): Hiroshi Onihashi; Hiroshi Aida; Kiyumi No; Takashi Noji; Yuichi Murakoshi; Kenichi Ito; Keiichi Saito; Junsuke Koma
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Paper 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.

Paper Details

Date Published: 28 June 2001
PDF: 7 pages
Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); doi: 10.1117/12.430874
Show Author Affiliations
Hiroshi Onihashi, Toshiba Corp. (Japan)
Hiroshi Aida, Toshiba Corp. (Japan)
Kiyumi No, Toshiba Corp. (Japan)
Takashi Noji, Toshiba Corp. (Japan)
Yuichi Murakoshi, Toshiba Corp. (Japan)
Kenichi Ito, Toshiba Corp. (Japan)
Keiichi Saito, Toshiba Corp. (Japan)
Junsuke Koma, Toshiba Electric Engineering Corp. (Japan)


Published in SPIE Proceedings Vol. 4320:
Medical Imaging 2001: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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