Energy resolution of a segmented silicon strip detector for photon-counting spectral CT

被引：38
|
作者：
Xu, Cheng [1 ]
Chen, Han [1 ]
Persson, Mats [1 ]
Karlsson, Staffan [1 ]
Danielsson, Mats [1 ]
Svensson, Christer [2 ]
Bornefalk, Hans [1 ]
机构：
[1] AlbaNova Univ Ctr, Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden
[2] Linkoping Univ, Dept Elect Engn, SE-58183 Linkoping, Sweden
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2013年 / 715卷
关键词：
Photon counting; Silicon strip detector; Spectral computed tomography; Energy resolution; Synchrotron; COMPUTED-TOMOGRAPHY;
D O I：
10.1016/j.nima.2013.02.030
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We investigated the energy resolution of a segmented silicon strip detector for photon-counting spectral computed tomography (CT). The detector response to different monochromatic photon energies and various photon fluxes was characterized at the Elettra synchrotron. An RMS energy resolution of 1.50 keV has been demonstrated for 22 keV photons at zero flux, and it deteriorated as a function of input count rate at a rate of 5.1 eV mm(2)/Mcps. The charge sharing effect has been evaluated. The results show that around 11.1% of the interacting photons experience charge sharing for 22 keV photons and 15.3% for 30 keV. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：11 / 17
页数：7
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