Effect of CsI(Tl) micro-conical-frustums on the performance of the pixelated CsI(Tl) scintillation screen in X-ray imaging

被引：6

作者：

Chen, Hui ^{[1
]}

Gu, Mu ^{[1
]}

Liu, Xiaolin ^{[1
]}

Zhang, Juannan ^{[1
]}

Huang, Shiming ^{[1
]}

Liu, Bo ^{[1
]}

Ni, Chen ^{[1
]}

机构：

[1] Tongji Univ, Sch Phys Sci & Engn, Shanghai Key Lab Special Artificial Microstruct M, Shanghai 200092, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2019年 / 921卷

基金：

中国国家自然科学基金;

关键词：

Pixelated CsI(Tl) scintillation screen; Oxidized silicon micro-pore array template; Shape of CsI(Tl) micro-conical-frustum; Performance in X-ray imaging; DETECTOR; SILICON; SIMULATION; CSI;

D O I：

10.1016/j.nima.2018.12.006

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The pixelated CsI(Tl) scintillation screen based on oxidized silicon micro-pore array template with CsI(Tl) microconical-frustums (CMCF) was proposed. The effect of the CMCF on the performance of the pixelated CsI(Tl) scintillation screen in X-ray imaging was studied by using Geant4 Monte Carlo simulation code. The variations of the light output (LO), modulation transfer function (MTF) and detective quantum efficiency (DQE) for the screen with the cone angle beta of the CMCF in X-ray imaging were revealed. The results show that the LO of the pixelated scintillation screen with CMCF is superior to that of the screens with CsI(Tl) micro-cylinders (CMC) or with reversed CsI(Tl) micro-conical-frustums (RCMCF), but the spatial resolution of the X-ray imaging system by using the pixelated scintillation screen with RCMCF is better than that by using the screens with CMCF or with CMC. At low frequency, the cone angle beta corresponding to DQEs from good to bad are 2.40 degrees, 0.00 degrees and -2.40 degrees. But at high frequency, the cone angle beta corresponding to DQEs from good to bad change to 2.40 degrees, -2.40 degrees and 0.00 degrees. The reason is that, for a pixelated scintillation screen, the DQE for the screen not only depends on the efficiency of X-ray absorption, but also depends on the number of scintillation photons exiting the bottom the screen per interacting X-ray photon and its Poisson excess, and MTF. The simulated results of DQEs show that the comprehensive performance of the pixelated CsI(Tl) screen with CMCF in X-ray imaging is better than that of the screens with CMC or with CRMCF.

引用

页码：18 / 21

页数：4

共 27 条

[1] User-friendly, ultra-fast simulation of detector DQE(f) [J].

Abel, Eric ;

Sun, Mingshan ;

Constantin, Dragos ;

Fahrig, Rebecca ;

Star-Lack, Josh .

MEDICAL IMAGING 2013: PHYSICS OF MEDICAL IMAGING, 2013, 8668

[2] GEANT4-a simulation toolkit [J].

Agostinelli, S ;

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Arce, P ;

Asai, M ;

Axen, D ;

Banerjee, S ;

Barrand, G ;

Behner, F ;

Bellagamba, L ;

Boudreau, J ;

Broglia, L ;

Brunengo, A ;

Burkhardt, H ;

Chauvie, S ;

Chuma, J ;

Chytracek, R ;

Cooperman, G ;

Cosmo, G ;

Degtyarenko, P ;

Dell'Acqua, A ;

Depaola, G ;

Dietrich, D ;

Enami, R ;

Feliciello, A ;

Ferguson, C ;

Fesefeldt, H ;

Folger, G ;

Foppiano, F ;

Forti, A ;

Garelli, S ;

Giani, S ;

Giannitrapani, R ;

Gibin, D ;

Cadenas, JJG ;

González, I ;

Abril, GG ;

Greeniaus, G ;

Greiner, W ;

Grichine, V ;

Grossheim, A ;

Guatelli, S ;

Gumplinger, P ;

Hamatsu, R ;

Hashimoto, K ;

Hasui, H ;

Heikkinen, A ;

Howard, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303

[3] Geant4 developments and applications [J].

Allison, J ;

Amako, K ;

Apostolakis, J ;

Araujo, H ;

Dubois, PA ;

Asai, M ;

Barrand, G ;

Capra, R ;

Chauvie, S ;

Chytracek, R ;

Cirrone, GAP ;

Cooperman, G ;

Cosmo, G ;

Cuttone, G ;

Daquino, GG ;

Donszelmann, M ;

Dressel, M ;

Folger, G ;

Foppiano, F ;

Generowicz, J ;

Grichine, V ;

Guatelli, S ;

Gumplinger, P ;

Heikkinen, A ;

Hrivnacova, I ;

Howard, A ;

Incerti, S ;

Ivanchenko, V ;

Johnson, T ;

Jones, F ;

Koi, T ;

Kokoulin, R ;

Kossov, M ;

Kurashige, H ;

Lara, V ;

Larsson, S ;

Lei, F ;

Link, O ;

Longo, F ;

Maire, M ;

Mantero, A ;

Mascialino, B ;

McLaren, I ;

Lorenzo, PM ;

Minamimoto, K ;

Murakami, K ;

Nieminen, P ;

Pandola, L ;

Parlati, S ;

Peralta, L .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2006, 53 (01) :270-278

[4] DIELECTRIC FUNCTIONS AND OPTICAL-PARAMETERS OF SI, GE, GAP, GAAS, GASB, INP, INAS, AND INSB FROM 1.5 TO 6.0 EV [J].

ASPNES, DE ;

STUDNA, AA .

PHYSICAL REVIEW B, 1983, 27 (02) :985-1009

[5] Performance of scintillating waveguides for CCD-based X-ray detectors [J].

Badel, X ;

Norlin, B ;

Kleimann, P ;

Williams, L ;

Moody, SJ ;

Tyrrell, GC ;

Fröjdh, C ;

Linnros, J .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2006, 53 (01) :3-8

[6] Metal-assisted chemical etching of silicon in HF-H2O2 [J].

Chartier, C. ;

Bastide, S. ;

Levy-Clement, C. .

ELECTROCHIMICA ACTA, 2008, 53 (17) :5509-5516

[7] Spatial resolution and light output of pixelated CsI(TI) scintillation screen based on oxidized silicon micropore array template [J].

Chen, H. ;

Gu, M. ;

Liu, X. ;

Huang, S. ;

Liu, B. ;

Zhang, J. .

JOURNAL OF INSTRUMENTATION, 2018, 13

[8] A SPATIAL-FREQUENCY DEPENDENT QUANTUM ACCOUNTING DIAGRAM AND DETECTIVE QUANTUM EFFICIENCY MODEL OF SIGNAL AND NOISE-PROPAGATION IN CASCADED IMAGING-SYSTEMS [J].

CUNNINGHAM, IA ;

WESTMORE, MS ;

FENSTER, A .

MEDICAL PHYSICS, 1994, 21 (03) :417-427

[9] Refractive index determination of SiO2 layer in the UV/Vis/NIR range: spectrophotometric reverse engineering on single and bi-layer designs [J].

Gao, L. ;

Lemarchand, F. ;

Lequime, M. .

JOURNAL OF THE EUROPEAN OPTICAL SOCIETY-RAPID PUBLICATIONS, 2013, 8 :13010

[10] PROPERTIES OF CSI(TL) RENAISSANCE OF AN OLD SCINTILLATION MATERIAL [J].

GRASSMANN, H ;

LORENZ, E ;

MOSER, HG .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1985, 228 (2-3) :323-326

← 1 2 3 →