15 September 2011 Cancer diagnosis using a conventional x-ray fluorescence camera with a cadmium-telluride detector
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X-ray fluorescence (XRF) analysis is useful for mapping various atoms in objects. Bremsstrahlung X-rays are selected using a 3.0 mm-thick aluminum filter, and these rays are absorbed by indium, cerium and gadolinium atoms in objects. Then XRF is produced from the objects, and photons are detected by a cadmium-telluride detector. The Kα photons are discriminated using a multichannel analyzer, and the number of photons is counted by a counter card. The objects are moved and scanned by an x-y stage in conjunction with a two-stage controller, and X-ray images obtained by atomic mapping are shown on a personal computer monitor. The scan steps of the x and y axes were both 2.5 mm, and the photon-counting time per mapping point was 0.5 s. We carried out atomic mapping using the X-ray camera, and Kα photons from cerium and gadolinium atoms were produced from cancerous regions in nude mice.
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Eiichi Sato, Eiichi Sato, Toshiyuki Enomoto, Toshiyuki Enomoto, Osahiko Hagiwara, Osahiko Hagiwara, Abulajiang Abudurexiti, Abulajiang Abudurexiti, Koetsu Sato, Koetsu Sato, Shigehiro Sato, Shigehiro Sato, Akira Ogawa, Akira Ogawa, Jun Onagawa, Jun Onagawa, "Cancer diagnosis using a conventional x-ray fluorescence camera with a cadmium-telluride detector", Proc. SPIE 8143, Medical Applications of Radiation Detectors, 81430L (15 September 2011); doi: 10.1117/12.893328; https://doi.org/10.1117/12.893328

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