Low-dark-counting high-speed x-ray photon detection using an LSO Crystal and a small photomultiplier tube

Satoshi Yamaguchi; Eiichi Sato; Yasuyuki Oda; Ryuji Nakamura; Hirobumi Oikawa; Tomonori Yabuushi; Hisanori Ariga; Shigeru Ehara

doi:10.1117/12.2062419

12 September 2014 Low-dark-counting high-speed x-ray photon detection using an LSO Crystal and a small photomultiplier tube

Satoshi Yamaguchi, Eiichi Sato, Yasuyuki Oda, Ryuji Nakamura, Hirobumi Oikawa, Tomonori Yabuushi, Hisanori Ariga, Shigeru Ehara

Author Affiliations +

Proceedings Volume 9214, Medical Applications of Radiation Detectors IV; 921405 (2014) https://doi.org/10.1117/12.2062419
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

To develop a dual-energy X-ray CT (DE-CT) system, we have performed investigation of high-speed dual-energy photon counting using two comparators and a low-dark-counting LSO-MPPC (multipixel photon counter) detector. To measure X-ray spectra, electric charges produced in the MPPC are converted into voltages and amplified by a highspeed current-voltage amplifier, and the event pulses are sent to a multichannel analyzer. The MPPC was driven under pre-Geiger mode at an MPPC bias voltage of 70.7 V. The event pulses are sent to two high-speed comparators for selecting two threshold energies to perform DE-CT. The ED-CT is accomplished by repeated linear scans and rotations of the object, and two sets of projection curves of the object are obtained simultaneously by the linear scan. In the DECT, two different-energy tomograms are obtained simultaneously, and photon-count energy subtraction imaging was carried out.

Citation Download Citation

Satoshi Yamaguchi, Eiichi Sato, Yasuyuki Oda, Ryuji Nakamura, Hirobumi Oikawa, Tomonori Yabuushi, Hisanori Ariga, and Shigeru Ehara "Low-dark-counting high-speed x-ray photon detection using an LSO Crystal and a small photomultiplier tube", Proc. SPIE 9214, Medical Applications of Radiation Detectors IV, 921405 (12 September 2014); https://doi.org/10.1117/12.2062419

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available