Quasi-pixel structured nanocrystalline Gd2O3(Eu) scintillation screens and imaging performance for indirect X-ray imaging sensors

2011 ◽  
Vol 648 ◽  
pp. S12-S15 ◽  
Author(s):  
Bo Kyung Cha ◽  
Jong Yul Kim ◽  
Gyuseong Cho ◽  
Chang-Woo Seo ◽  
Sungchae Jeon ◽  
...  
Keyword(s):  
X Ray ◽  
X Ray Imaging ◽  
Imaging Sensors ◽  
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

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.

Optically stimulable transparent KCl:Eu crystal as a storage material for two-dimensional UV-ray or x-ray imaging sensors

1993 ◽  
Author(s):  
Hidehito Nanto ◽  
Kazuhiko Murayama ◽  
Fumitaka Endo ◽  
Yoshiaki Hirai ◽  
Shin-ichi Taniguchi ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Storage Material ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Sensors
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