Flat Panel X-ray Imaging of LuAG:Ce,Mg Ceramic Scintillators

doi:10.15541/jim20150046

Abstract

Abstract:

(Lu, Mg, Ce)₃Al₅O₁₂ (LuAG: Ce, Mg) transparent ceramic scintillators (LuAG: 0.3at% Ce, 0.2at% Mg) with high optical and scintillation efficiency were fabricated by solid-state reaction method combined with vacuum sintering. The ceramic scintillator with dimension of 20 mm×20 mm×0.05 mm was packed with graphite substrate of 25 mm×25 mm×4 mm by graphite powders contained silica gel. Laser cutting of cubic array with dimension of 50 μm×50 μm and distance of 10 μm was performed. Flat panel X-ray imaging based on as prepaired ceramics was demonstrated. The images were good quality with a high resolution. The quality of the photos were evaluated by line-pair pattern method and knife edge method, respectively. MTF value of 17.5% was at 10 lp/mm for the ceramic scintillators after laser cutting, while resolution of 9 lp/mm achieved at 10% MTF by knife edge measurement. Based on above data, LuAG:Ce,Mg ceramics are proved to be a promising scintillator in flat panel X-ray imaging.

Key words: LuAG:Ce, Mg, ceramic scintillators, flat panel detector, X-ray imaging

CLC Number:

TL812

HU Chen, LIU Shu-Ping, FENG Zhao-Dong, QIN Xiu-Bo, SHI Yun, PAN Yu-Bai. Flat Panel X-ray Imaging of LuAG:Ce,Mg Ceramic Scintillators[J]. Journal of Inorganic Materials, 2015, 30(8): 814-818.

Figures/Tables 8

Fig. 1 Transmission and photograph of LuAG:Ce,Mg ceramics fabricated by solid-state reaction method (2 mm thick)

Fig. 2 Radioluminescence spectra of LuAG:Ce,Mg ceramics and BGO single crystal

Fig. 3 Sketchof flat panel imaging

Fig. 4 Photographs of laser cut ceramics samples taken by optical microscope and digital camera

Fig. 5 X-ray imaging of standard line-pair pattern by ceramics samples (a) without and (b) with cutting

Fig. 6 MTF value of ceramics samples with and without laser cutting by line-pair pattern method

Fig. 7 X-ray imaging of knife edge by ceramic samples (a) without and (b) with cutting

Fig. 8 MTF curve of ceramics samples with and without laser cutting measured by knife edge method

References 10

[1]	EIJK C W E V. Inorganic scintillators in medical imaging.Phys. Med. Biol., 2002, 47(8): R85-R106.
[2]	NIKL M.Scintillation detectors for X-rays. Meas. Sci.Technol., 2006, 17(4):R37-R54.
[3]	ZHAO W, ROWLANDS J A.X-ray imaging using amorphous seleniun feasibility of a flat-panel self- scaned detector for digital radiology.Med. Phys., 1995, 22(10):1595-1604.
[4]	KOBAYASHI M.Radiation Measurement with Scintillators. Nagoya: V2-Solution, 2014: 437-443.
[5]	MARTIN S.Flat detectors and their clinical applications.Eur. Radiol., 2005, 15(9): 1934-1947.
[6]	AKSOY M E, KAMASAK M E, AKKUR E, et al.Evaluation and Comparison of Image Quality for Indirect Flat Panel Systems with CsI and GOS scintillators. 7th International Symposium onHealth Informatics and Bioinformatics (HIBIT), Nevsehir, 2012: 57-62.
[7]	LI H, LIU X, HUANG L.Fabrication of transparent cerium-doped lutetium aluminum garnet (LuAG:Ce) ceramics by a solid-state reaction method.J. Am. Ceram. Soc., 2005, 88(11):3226-3228.
[8]	LIU S, FENG X, ZHOU Z, et al.Effect of Mg2+ co-doping on the scintillation performance of LuAG:Ce ceramics.Phys. Status Solidi-R, 2014, 8(1): 105-109.
[9]	SHEN Y, SHI Y, PAN Y, et al.Fabrication and 2D-mapping of Pr: Lu3Al5O12 scintillator ceramics with high light yield and fast decay time.J. Inorg. Mater., 2014, 29(5):534-538.
[10]	SHEN Y, SHI Y, FENG X, et al.The harmful effects of sintering aids in Pr:LuAG optical ceramic scintillator.J. Am. Ceram. Soc., 2012, 95(7):2130-2132.

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