Improvement of imaging speed in fluorescent x-ray computed tomography using synchrotron radiation

✍ Scribed by Yasuhiro Hasegawa; Quanwen Yu; Daisuke Noto; Tohoru Takeda; Kazuyuki Hyodo; Toru Yashiro; Tetsuya Yuasa; Yukio Hiranaka; Yuji Itai; Takao Akatsuka

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 634 KB
• Volume: 33
• Category: Article
• ISSN: 0882-1666
• DOI: 10.1002/scj.1101

✦ Synopsis

Abstract

Improving the speed of fluorescent X‐ray CT imaging using synchrotron radiation has been studied from the points of view of the imaging system and the processing algorithm. Regarding the imaging system, high‐speed imaging at 2 seconds per point with a dead time of about 6% has been realized by incorporating an electronic system which operates stably in the high count rate region. In addition, the amounts of computation and memory required have been reduced to about 1/100 of the levels realized up to now by improving the efficiency of the reconstruction algorithm. The quantitative properties of this system have been confirmed by tests with a physical phantom and the iodine distribution has been estimated in in vitro human thyroid images. These results indicate the implementability of in vivo fluorescent X‐ray CT instrumentation. © 2002 Scripta Technica, Syst Comp Jpn, 33(2): 1–11, 2002