Scintillation characteristics and imaging performance of CsI:Tl thin films for X-ray imaging applications

2009 ◽  
Vol 604 (1-2) ◽  
pp. 224-228 ◽  
Author(s):  
Bo Kyung Cha ◽  
Jeong-Hyun Shin ◽  
Jun Hyung Bae ◽  
Chae-hun Lee ◽  
Sungho Chang ◽  
...  
Keyword(s):  
Thin Films ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Performance

scholarly journals Imaging Performance of a Multimodal Module to Enhance Preclinical Irradiator Capabilities

2020 ◽  
pp. 1-4
Author(s):  
Sophie Pinel ◽  
Joël Daouk ◽  
Justine Jubréaux ◽  
Alicia Chateau ◽  
Hervé Schohn ◽  
...  
Keyword(s):  
Performance Measurements ◽  
Radiographic Images ◽  
Image Guided Radiotherapy ◽  
X Ray ◽  
Optical Images ◽  
X Ray Imaging ◽  
Single Sensor ◽  
Overall Performance ◽  
Imaging Performance ◽  
Image Homogeneity

This article highlights the performance measurements of an optical device which aims at upgrading preclinical irradiators. The evaluated device allows acquiring X-ray as well as bioluminescence images with a single sensor. The latter consists of a supercooled camera equipped with a 1024x1024 charge coupling device (each element measuring 13x13µm²). X-ray imaging is feasible, thanks to a conversion phosphor screen. Phantom acquisitions revealed a spatial resolution of 2.5 line pairs per millimetre (0.2mm) for Xray imaging and between 0.4 and 0.7mm for bioluminescence images. Image homogeneity was 0.8 for radiographic images with preclinical imaging parameters and higher than 0.9 for optical images. For functional imaging, contrast to noise ratio (CNR) ranged from 1.3 (for contrast of 2:1 and 0.1s acquisition) up to 253 (for contrast of 32:1 and 5s acquisition). CNR was related to acquisition duration. The device’s overall performance revealed that it is suitable to upgrade existing irradiators and improve laboratory capabilities toward image-guided radiotherapy.

Measurements of X-ray Imaging Performance of Granular Phosphors With Direct-Coupled CMOS Sensors

2008 ◽  
Vol 55 (3) ◽  
pp. 1338-1343 ◽  
Author(s):  
Min Kook Cho ◽  
Ho Kyung Kim ◽  
Thorsten Graeve ◽  
Seung Man Yun ◽  
Chang Hwy Lim ◽  
...  
Keyword(s):  
X Ray ◽  
X Ray Imaging ◽  
Cmos Sensors ◽  
Imaging Performance

Scintillation efficiency and X-ray imaging with the RE-Doped LuAG thin films grown by liquid phase epitaxy

2012 ◽  
Vol 47 (4) ◽  
pp. 311-314 ◽  
Author(s):  
Jan Tous ◽  
Karel Blazek ◽  
Miroslav Kucera ◽  
Martin Nikl ◽  
Jiri A. Mares
Keyword(s):  
Thin Films ◽  
Liquid Phase ◽  
Liquid Phase Epitaxy ◽  
X Ray ◽  
X Ray Imaging ◽  
Scintillation Efficiency

Investigation of Scintillation Screens for X-Ray Imaging

2006 ◽  
Vol 321-323 ◽  
pp. 1056-1059 ◽  
Author(s):  
Jung Min Kim ◽  
Ho Kyung Kim ◽  
Min Ho Cheong ◽  
Min Kook Cho ◽  
Cheol Soon Shon ◽  
...  
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Columnar Structure ◽  
Diagnostic Radiology ◽  
Modulation Transfer ◽  
X Ray ◽  
X Ray Imaging ◽  
Conventional Film ◽  
Wide Range ◽  
Imaging Performance

Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) phosphor screen is the most popular X-ray converter in diagnostic radiology. We have investigated the fundamental imaging performance of Gd2O2S:Tb screens in terms of X-ray sensitivity and MTF (modulation-transfer function). The measurements were performed for a wide range of coverages (34 – 135 mg/cm2) by using a conventional film radiographic method. In addition, CsI:Tl having columnar structure was also investigated.

Efficient high-resolution hard x-ray imaging with transparent Lu2O3:Eu scintillator thin films

2015 ◽  
Author(s):  
Zsolt Marton ◽  
Stuart R. Miller ◽  
Charles Brecher ◽  
Peter Kenesei ◽  
Matthew D. Moore ◽  
...  
Keyword(s):  
Thin Films ◽  
High Resolution ◽  
X Ray ◽  
X Ray Imaging

scholarly journals Converting Films for X-Ray Detectors, Applied to Amorphous Silicon Arrays.

1997 ◽  
Vol 487 ◽  
Author(s):  
S. Ross ◽  
G. Zentai
Keyword(s):  
Thin Films ◽  
Amorphous Silicon ◽  
Protein Crystallography ◽  
Large Area ◽  
X Ray ◽  
X Ray Imaging ◽  
Semiconductor Thin Films ◽  
Area X ◽  
Silicon Arrays

AbstractThis paper presents results from our on-going efforts to characterize semiconductor thin films for direct x-ray conversion. We deposit these thin films onto an amorphous silicon (a-Si:H) readout array with the overall goal of developing a large area x-ray detector for protein crystallography, and for other x-ray imaging fields.

Lead Iodide Thin Films Grown Using N.N-Dimethylformamide as Solvent

2007 ◽  
Vol 994 ◽  
Author(s):  
Jose Fernando Condeles ◽  
Ademar Marques Caldeira-Filho ◽  
Marcelo Mulato
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Dark Conductivity ◽  
Medical Systems ◽  
X Ray Diffraction ◽  
Lead Iodide ◽  
Final Thickness ◽  
X Ray ◽  
Deposition Parameters ◽  
X Ray Imaging

AbstractSpray pyrolysis was used for the deposition of lead iodide (PbI2) thin films using N.N-dimethylformamide (DMF) as an alternative solvent under varying deposition parameters. Final thickness of 60 μm was obtained for a total deposition time of 2.5 hours. The films were characterized mainly by using Raman and photoluminescence, but additional techniques such as X-ray diffraction, scanning electron microscopy and dark conductivity as a function of temperature were also employed. Thick PbI2 films deposited by spray pyrolysis using DMF as a solvent are promising to be used in medical systems as X-ray imaging.

A novel x-ray imaging system and its imaging performance

2006 ◽  
Author(s):  
Chunyu Yu ◽  
Benkang Chang ◽  
Shiyun Wang ◽  
Junju Zhang ◽  
Xiao Yao
Keyword(s):  
Imaging System ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Performance
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