Imaging characteristics of the development model of the JET-X x-ray telescope

1992 ◽  
Author(s):  
Oberto Citterio ◽  
Paolo Conconi ◽  
Francesco Mazzoleni ◽  
Giancarlo Conti ◽  
Giancarlo Cusumano ◽  
...  
Keyword(s):  
Development Model ◽  
X Ray ◽  
Imaging Characteristics

Imaging characteristics of the development model of the SAX x-ray imaging concentrators

1991 ◽  
Author(s):  
Oberto Citterio ◽  
Paolo Conconi ◽  
Giancarlo Conti ◽  
E. Mattaini ◽  
E. Santambrogio ◽  
...  
Keyword(s):  
Development Model ◽  
X Ray ◽  
Imaging Characteristics ◽  
X Ray Imaging

An investigation of the imaging characteristics of the Y2O2S:Eu3+ phosphor for application in X-ray detectors of Digital Mammography

1998 ◽  
Vol 49 (8) ◽  
pp. 931-937 ◽  
Author(s):  
D. Cavouras ◽  
I. Kandarakis ◽  
G.S. Panayiotakis ◽  
E. Kanellopoulos ◽  
D. Triantis ◽  
...  
Keyword(s):  
Digital Mammography ◽  
X Ray ◽  
Imaging Characteristics

The effects of photon flux on energy spectra and imaging characteristics in a photon-counting x-ray detector

2013 ◽  
Vol 58 (14) ◽  
pp. 4865-4879 ◽  
Author(s):  
H-M Cho ◽  
H-J Kim ◽  
Y-N Choi ◽  
S-W Lee ◽  
H-J Ryu ◽  
...  
Keyword(s):  
Photon Counting ◽  
Energy Spectra ◽  
Photon Flux ◽  
X Ray ◽  
Imaging Characteristics

scholarly journals A study on the imaging characteristics of Gold nanoparticles as a contrast agent in X-ray computed tomography

2017 ◽  
Vol 23 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Asghar Mesbahi ◽  
Fatemeh Famouri ◽  
Mohammad Johari Ahar ◽  
Maryam Olade Ghaffari ◽  
Seyed Mostafa Ghavami
Keyword(s):  
Computed Tomography ◽  
Contrast Media ◽  
Contrast Agent ◽  
Hounsfield Unit ◽  
Ct Number ◽  
Agent Based ◽  
X Ray ◽  
Imaging Characteristics ◽  
Tube Potential ◽  
X Ray Computed

AbstractAim: In the current study, some imaging characteristics of AuNPs were quantitatively analyzed and compared with two conventional contrast media (CM) including Iodine and Gadolinium by using of a cylindrical phantom.Methods: AuNPs were synthesized with the mean diameter of 16 nm and were equalized to the concentration of 0.5, 1, 2 and 4 mg/mL in the same volumes. A cylindrical phantom resembling the head and neck was fabricated and drilled to contain small tubes filled with Iodine, Gadolinium, and AuNPs as contrast media. The phantom was scanned in different exposure techniques and CT numbers of three studied contrast media inside test tubes were measured in terms of Hounsfield Unit (HU). The imaging parameters of the noise and contrast to noise ratios (CNR) were calculated for all studied CMs.Results: AuNPs showed 128% and 166% higher CT number in comparison with Iodine and Gadolinium respectively. Also, Iodine had a greater CT number than Gadolinium for the same exposure techniques and concentration. The maximum CT number for AuNPs and studied contrast materials was obtained at the highest mAs and the lowest tube potential. The maximum CT number were 1033±11 (HU) for AuNP, 565±10 (HU) for Iodine, 458±11 for Gadolinium. Moreover, the maximum CNRs of 433±117, 203±53, 145±37 were found for AuNPs, Iodine and Gadolinium respectively.Conclusion: The contrast agent based on AuNPs showed higher imaging quality in terms of contrast and noise relative to other iodine and gadolinium based contrast media in X-ray computed tomography. Application of the AuNPs as a contrast medium in x-ray CT is recommended.

X-ray imaging characteristics from a large spherically bent mica crystal (abstract)

2001 ◽  
Vol 72 (1) ◽  
pp. 1248-1248 ◽  
Author(s):  
S. G. Lee ◽  
J. G. Bak ◽  
H. G. Lee ◽  
M. Kwon ◽  
M. Bitter ◽  
...  
Keyword(s):  
X Ray ◽  
Imaging Characteristics ◽  
X Ray Imaging ◽  
Mica Crystal

Imaging Characteristics of a Replicated Wolter Type. I. X-Ray Mirror Designed for Laser Plasma Diagnostics

1987 ◽  
Vol 26 (Part 1, No. 6) ◽  
pp. 952-954 ◽  
Author(s):  
Sadao Aoki ◽  
Munehisa Shiozawa ◽  
Keiji Kamigaki ◽  
Hiroshi Hashimoto ◽  
Masahiko Kokaji ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Plasma Diagnostics ◽  
Type I ◽  
X Ray ◽  
Imaging Characteristics

Design and Analysis of Hard X-Ray Microscope Employing Toroidal Mirrors Working at Grazing-Incidence

2019 ◽  
Vol 34 (04) ◽  
pp. 2055010
Author(s):  
Ying Cui ◽  
Yadong Yan ◽  
Bingjing Wu ◽  
Qi Li ◽  
Junhua He
Keyword(s):  
Optical Axis ◽  
Incidence Angle ◽  
Incident Angle ◽  
Optical Design ◽  
Grazing Incidence ◽  
Imaging Diagnosis ◽  
X Ray ◽  
Imaging Characteristics ◽  
Axis Offset ◽  
Better Than

A high resolution microscope is designed for plasma hard X-ray (10–20[Formula: see text]keV) imaging diagnosis. This system consists of two toroidal mirrors, which are nearly parallel, with an angle twice that of the grazing incidence angle and a plane mirror for spectral selection and correction of optical axis offset. The imaging characteristics of single toroidal mirror and double mirrors are analyzed in detail by the optical path function. The optical design, parameter optimization, image quality simulation and analysis of the microscope are carried out. The optimized hard X-ray microscope has a resolution better than 5[Formula: see text][Formula: see text]m at 1[Formula: see text]mm object field of view. The experimental data shows that the variation of the resolution is smaller in the direction of incident angle decrease than that in the increasing direction.

Some Imaging Characteristics of the Dynamic Spatial Reconstructor X-Ray Scanner System

1983 ◽  
pp. 254-271 ◽  
Author(s):  
T. Behrenbeck ◽  
L. J. Sinak ◽  
R. A. Robb ◽  
J. H. Kinsey ◽  
E. L. Ritman
Keyword(s):  
X Ray ◽  
Imaging Characteristics
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