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Proceedings Paper

X-ray fluorescence camera for biomedical imaging
Author(s): Hiroshi Matsukiyo; Eiichi Sato; Purkhet Abderyim; Akihiro Osawa; Toshiyuki Enomoto; Manabu Watanabe; Jiro Nagao M.D.; Seiichiro Nomiya; Koetsu Sato; Akira Ogawa; Shigehiro Sato; Toshio Ichimaru
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Paper Abstract

X-Ray Fluorescence (XRF) analysis is useful for measuring density distributions of contrast media in vivo. An XRF camera was developed to carry out mapping for iodine-based contrast media used in medical angiography. In this camera, objects are exposed by an x-ray beam formed using a 3.0-mm-diameter lead hole. Next, cerium K-series characteristic x-rays are absorbed effectively by iodine media in objects, and iodine fluorescences are produced from the objects. Iodine Kα fluorescences are selected out using a 58-μm-thick stannum filter and are detected by a cadmium telluride (CdTe) detector. Kα rays are discriminated out by a multichannel analyzer (MCA), and photon number is counted by a counter board (CB). The objects are moved and scanned using an x-y stage driven by a two-stage controller, and x-ray images obtained by iodine mapping are shown in a personal computer (PC) monitor. In particular, iodine fluorescences were produced from remanent iodine elements in a cancer region of a rabbit ear.

Paper Details

Date Published: 3 September 2008
PDF: 5 pages
Proc. SPIE 7080, Penetrating Radiation Systems and Applications IX, 708007 (3 September 2008); doi: 10.1117/12.795890
Show Author Affiliations
Hiroshi Matsukiyo, Toho Univ. School of Medicine (Japan)
Eiichi Sato, Iwate Medical Univ. (Japan)
Purkhet Abderyim, Iwate Univ. (Japan)
Akihiro Osawa, Toho Univ. School of Medicine (Japan)
Toshiyuki Enomoto, Toho Univ. School of Medicine (Japan)
Manabu Watanabe, Toho Univ. School of Medicine (Japan)
Jiro Nagao M.D., Toho Univ. School of Medicine (Japan)
Seiichiro Nomiya, Raytec Inc. (Japan)
Koetsu Sato, Toreck Inc. (Japan)
Akira Ogawa, Iwate Medical Univ. (Japan)
Shigehiro Sato, Iwate Medical Univ. (Japan)
Toshio Ichimaru, Hirosaki Univ. (Japan)

Published in SPIE Proceedings Vol. 7080:
Penetrating Radiation Systems and Applications IX
F. Patrick Doty; H. Bradford Barber; Hans Roehrig; Richard C Schirato, Editor(s)

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