2D imaging by X-ray fluorescence microtomography

2000 ◽  
Author(s):  
A. Simionovici
Keyword(s):  
X Ray ◽  
2D Imaging

Development of a neonate X‐ray phantom for 2D imaging applications using single‐tone inkjet printing

2021 ◽  
Author(s):  
Juan P. Cruz‐Bastida ◽  
Emily L. Marshall ◽  
Nikolaj Reiser ◽  
Jonathan George ◽  
Erik A. Pearson ◽  
...  
Keyword(s):  
Inkjet Printing ◽  
Single Tone ◽  
X Ray ◽  
2D Imaging

Development of a soft-X ray detector for energy resolved 2D imaging by means of a Gas Pixel Detector with highly integrated microelectronics

2008 ◽  
Author(s):  
D. Pacella ◽  
A. Romano ◽  
G. Pizzicaroli ◽  
L. Gabellieri ◽  
R. Bellazzini ◽  
...  
Keyword(s):  
Pixel Detector ◽  
X Ray ◽  
2D Imaging

scholarly journals Experimental investigation of fast electron transport in solid density matter: Recent results from a new technique of X-ray energy-encoded 2D imaging

2009 ◽  
Vol 27 (4) ◽  
pp. 643-649 ◽  
Author(s):  
L. Labate ◽  
E. Förster ◽  
A. Giulietti ◽  
D. Giulietti ◽  
S. Höfer ◽  
...  
Keyword(s):  
Electron Transport ◽  
Fast Electron ◽  
Single Shot ◽  
Development Activity ◽  
X Ray ◽  
Laser Plasmas ◽  
2D Imaging ◽  
A New Technique ◽  
Density Matter ◽  
Fast Electron Transport

AbstractThe development activity of a new experimental technique for the study of the fast electron transport in high density matter is reported. This new diagnostic tool enables the X-ray 2D imaging of ultrahigh intensity laser plasmas with simultaneous spectral resolution in a very large energy range to be obtained. Results from recent experiments are discussed, in which the electron propagation in multilayer targets was studied by using the Kα. In particular, results highlighting the role of anisotropic Bremsstrahlung are reported, for the sake of the explanation of the capabilities of the new diagnostics. A discussion of a test experiment conceived to extend the technique to a single-shot operation is finally given.

scholarly journals Detecting Bombs in X-Ray Images of Hold Baggage: 2D Versus 3D Imaging

2018 ◽  
Vol 61 (2) ◽  
pp. 305-321 ◽  
Author(s):  
Nicole Hättenschwiler ◽  
Marcia Mendes ◽  
Adrian Schwaninger
Keyword(s):  
Image Quality ◽  
3D Imaging ◽  
Visual Inspection ◽  
Standard Procedure ◽  
Detection Performance ◽  
Imaging Systems ◽  
Specific Training ◽  
X Ray ◽  
2D Imaging ◽  
Lower Image Quality

Objective: This study compared the visual inspection performance of airport security officers (screeners) when screening hold baggage with state-of-the-art 3D versus older 2D imaging. Background: 3D imaging based on computer tomography features better automated detection of explosives and higher baggage throughput than older 2D X-ray imaging technology. Nonetheless, some countries and airports hesitate to implement 3D systems due to their lower image quality and the concern that screeners will need extensive and specific training before they can be allowed to work with 3D imaging. Method: Screeners working with 2D imaging (2D screeners) and screeners working with 3D imaging (3D screeners) conducted a simulated hold baggage screening task with both types of imaging. Differences in image quality of the imaging systems were assessed with the standard procedure for 2D imaging. Results: Despite lower image quality, screeners’ detection performance with 3D imaging was similar to that with 2D imaging. 3D screeners revealed higher detection performance with both types of imaging than 2D screeners. Conclusion: Features of 3D imaging systems (3D image rotation and slicing) seem to compensate for lower image quality. Visual inspection competency acquired with one type of imaging seems to transfer to visual inspection with the other type of imaging. Application: Replacing older 2D with newer 3D imaging systems can be recommended. 2D screeners do not need extensive and specific training to achieve comparable detection performance with 3D imaging. Current image quality standards for 2D imaging need revision before they can be applied to 3D imaging.

scholarly journals 2D-imaging of sampling-probe perturbations in laminar premixed flames using Kr X-ray fluorescence

2017 ◽  
Vol 181 ◽  
pp. 214-224 ◽  
Author(s):  
Nils Hansen ◽  
Robert S. Tranter ◽  
Kai Moshammer ◽  
John B. Randazzo ◽  
James P.A. Lockhart ◽  
...  
Keyword(s):  
Premixed Flames ◽  
X Ray ◽  
Sampling Probe ◽  
2D Imaging

Fast Electron Spatial Temperature Distribution Studied by X-Ray 2D Imaging

2014 ◽  
Vol 31 (5) ◽  
pp. 055201 ◽  
Author(s):  
Ye Tian ◽  
Wen-Tao Wang ◽  
Chang-Quan Xia ◽  
Cheng Wang ◽  
Yi Xu ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Fast Electron ◽  
X Ray ◽  
Spatial Temperature Distribution ◽  
2D Imaging ◽  
Spatial Temperature

scholarly journals X-ray phase contrast imaging of Vitis spp. buds shows freezing pattern and correlation between volume and cold hardiness

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Alisson P. Kovaleski ◽  
Jason P. Londo ◽  
Kenneth D. Finkelstein
Keyword(s):  
Phase Contrast ◽  
Cold Hardiness ◽  
Morphological Changes ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Time Resolved ◽  
X Ray ◽  
Winter Temperatures ◽  
Deep Supercooling ◽  
2D Imaging

Abstract Grapevine (Vitis spp.) buds must survive winter temperatures in order to resume growth when suitable conditions return in spring. They do so by developing cold hardiness through deep supercooling, but the mechanistic process of supercooling in buds remains largely unknown. Here we use synchrotron X-ray phase contrast imaging to study cold hardiness-related characteristics of V. amurensis, V. riparia, and V. vinifera buds: time-resolved 2D imaging was used to visualize freezing; and microtomography was used to evaluate morphological changes during deacclimation. Bud cold hardiness was determined (low temperature exotherms; LTEs) using needle thermocouples during 2D imaging as buds were cooled with a N2 gas cryostream. Resolution in 2D imaging did not allow for ice crystal identification, but freezing was assessed by movement of tissues coinciding with LTE values. Freezing was observed to propagate from the center of the bud toward the outer bud scales. The freezing events observed lasted several minutes. Additionally, loss of supercooling ability appears to be correlated with increases in bud tissue volume during the process of deacclimation, but major increases in volume occur after most of the supercooling ability is lost, suggesting growth resumption processes are limited by deacclimation state.

Investigation of Multiphase Interfaces in Small Channels Using Micro CT

2019 ◽  
Author(s):  
Julia Schuler ◽  
Norbert Kockmann
Keyword(s):  
Imaging Techniques ◽  
Three Dimensional ◽  
Process Intensification ◽  
Information Value ◽  
Micro Ct ◽  
X Ray ◽  
Multiphase Systems ◽  
2D Imaging ◽  
Tomographic Data ◽  
Small Channels

Abstract For the process intensification in miniaturized equipment with multiphase systems the spatial extension and shape of the interface is crucial. However, examining interfaces on the submillimeter to the submicron range is challenging due to limited optical accessibility. Therefore, in this work, micro computed X-ray tomography was applied to visualize static multiphase interfaces in small channels. The present work also introduces an image processing procedure used for the reconstruction of the tomographic data. To demonstrate both, the information value of 3D tomographic data and its advantages compared to conventional 2D imaging techniques, the contact angle between different fluid pairings and the solid channel is determined. This work forms the foundation for the three dimensional examination of multiphase flows and mass transfer in micro and milli channels.

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