International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed

ISSN: 2319-7064


Downloads: 111

Research Paper | Radiological Sciences | Japan | Volume 7 Issue 6, June 2018


Dual-Energy Low-Scattering X-Ray Computed Tomography Using a Lutetium-Oxyorthosilicate Crystal and a Small Photomultiplier Tube

Yasuyuki Oda | Mikihisa Kamada | Yoshikuni Ishihama | Risako Miwa | Nanase Terashima | Koichiro Sato | Kohei Ando | Eiichi Sato [3]


Abstract: To perform low-dose low-scattering X-ray computed tomography (CT), we have constructed a dual-energy (DE) X-ray photon counter with a high-count-rate detector system and energy-range and -region selectors. The detector system consists of a lutetium-oxyorthosilicate (LSO) crystal, a small photomultiplier tube (sPMT), and a simple inverse amplifier for LSO-sPMT with a pulse-width extender. In DE-CT, both the X-ray source and the detector module are fixed, and the object on the turntable oscillates on the translation stage. Line beams for DE-CT are formed using a lead pinhole and a front tantalum (Ta) x-y slit placed just in front of the object. The scattering-photon count from the object is reduced using a back Ta slit. X-ray photons are detected using the detector system, and the event pulses are input to the two energy selectors. In DE-CT, the tube voltage and current were 60 kV and 1.0 mA, respectively. The energy range and region for soft and iodine-K-edge CT are 12-31 and beyond 35 (35-60) keV, respectively. The maximum count rate of DE-CT was 75 kilocounts per second, and the exposure time for tomography was 19.6 min at a total rotation angle of 360. Outlines of the objects were clearly visible by reducing scattering-photon counts.


Keywords: LSO-sPMT Detector, X-Ray CT, Dual-Energy Dispersion, Low-Dose CT, Low-Scattering Count, I-K-Edge CT


Edition: Volume 7 Issue 6, June 2018,


Pages: 1584 - 1589


How to Download this Article?

You Need to Register Your Email Address Before You Can Download the Article PDF


How to Cite this Article?

Yasuyuki Oda, Mikihisa Kamada, Yoshikuni Ishihama, Risako Miwa, Nanase Terashima, Koichiro Sato, Kohei Ando, Eiichi Sato, "Dual-Energy Low-Scattering X-Ray Computed Tomography Using a Lutetium-Oxyorthosilicate Crystal and a Small Photomultiplier Tube", International Journal of Science and Research (IJSR), Volume 7 Issue 6, June 2018, pp. 1584-1589, https://www.ijsr.net/get_abstract.php?paper_id=ART20183510

Similar Articles with Keyword 'Detector'

Downloads: 142

Research Paper, Radiological Sciences, Egypt, Volume 7 Issue 11, November 2018

Pages: 1033 - 1036

Internal Dose Assessment in Patients Treated with I-131 using Whole Body Counter

T. M. Taha [4]

Share this Article

Downloads: 154 | Weekly Hits: ⮙1 | Monthly Hits: ⮙1

Case Studies, Radiological Sciences, India, Volume 7 Issue 3, March 2018

Pages: 82 - 84

Santorinicele - A Case Report

Dr. Anagha Rajeev Joshi [2] | Dr. Sukhada Vilas Kulkarni

Share this Article
Top