University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Evaluation of the light emission efficiency of LYSO:Ce scintillator under X-ray excitation for possible applications in medical imaging

Valais, IG, Kandarakis, IS, Konstantinidis, A, Nikolopoulos, DN, Sianoudis, I, Cavouras, DA, Dimitropoulos, N, Nomicos, CD and Panayiotakis, GS (2006) Evaluation of the light emission efficiency of LYSO:Ce scintillator under X-ray excitation for possible applications in medical imaging Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 569 (2 SPEC). pp. 201-204.

Full text not available from this repository.

Abstract

Lutetium-yttrium-based scintillators, such as LYSO:Ce, have a high effective atomic number, are non-hygroscopic, fast emitting materials, and promising candidates for use in positron emission imagers. The present study investigates the light emission characteristics of (Lu, Y)2SiO5:Ce (LYSO:Ce) single-crystal scintillator under X-ray imaging conditions. Also, the parameters related to the luminescence emission spectrum and emission efficiency were studied using experimental methods. Various X-ray tube voltages currently employed in X-ray imaging techniques were used. Measurements were performed using an experimental set-up based on a photomultiplier coupled to an integration sphere. In addition, the emission spectrum under UV and X-ray excitation was measured using an optical grating monochromator to determine the spectral compatibility of optical photon detectors incorporated in medical imaging systems. The absolute efficiency of LYSO:Ce was found to increase with increasing X-ray tube voltage (from 2.2 EU at 22 kVp to 22.4 EU at 140 kVp), while its spectrum, peaking at about 430 nm, was found compatible with most optical detectors (photodiodes, photocathodes, charge coupled devices, etc.). The matching factor was estimated to range from 0.76 to 0.92 (for a silicon photodiode and for a GaAsP photocathode, respectively). © 2006 Elsevier B.V. All rights reserved.

Item Type: Article
Authors :
NameEmailORCID
Valais, IGUNSPECIFIEDUNSPECIFIED
Kandarakis, ISUNSPECIFIEDUNSPECIFIED
Konstantinidis, Aa.konstantinidis@surrey.ac.ukUNSPECIFIED
Nikolopoulos, DNUNSPECIFIEDUNSPECIFIED
Sianoudis, IUNSPECIFIEDUNSPECIFIED
Cavouras, DAUNSPECIFIEDUNSPECIFIED
Dimitropoulos, NUNSPECIFIEDUNSPECIFIED
Nomicos, CDUNSPECIFIEDUNSPECIFIED
Panayiotakis, GSUNSPECIFIEDUNSPECIFIED
Date : 20 December 2006
Identification Number : 10.1016/j.nima.2006.08.018
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:54
Last Modified : 17 May 2017 12:54
URI: http://epubs.surrey.ac.uk/id/eprint/837194

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800