Quantitative 3D Shape Description of Dust Particles from Treated Seeds by Means of X-ray Micro-CT

2015 ◽  
Vol 49 (12) ◽  
pp. 7310-7318 ◽  
Author(s):  
Wouter Devarrewaere ◽  
Dieter Foqué ◽  
Udo Heimbach ◽  
Dennis Cantre ◽  
Bart Nicolai ◽  
...  
Keyword(s):  
Dust Particles ◽  
Shape Description ◽  
Micro Ct ◽  
X Ray ◽  
3D Shape

Improving soil remediation through characterization

1995 ◽  
Vol 53 ◽  
pp. 386-387
Author(s):  
E. C. Buck ◽  
N. L. Dietz ◽  
J. K. Bates
Keyword(s):  
Dust Particles ◽  
Radiochemical Analysis ◽  
Solid Product ◽  
Uranium Contamination ◽  
Physical Separation ◽  
X Ray ◽  
Rocky Flats ◽  
Remediation Strategies ◽  
Bearing Materials ◽  
X Ray Absorption

Operations at former weapons processing facilities in the U. S. have resulted in a large volume of radionuclidecontaminated soils and residues. In an effort to improve remediation strategies and meet environmental regulations, radionuclide-bearing particles in contaminant soils from Fernald in Ohio and the Rocky Flats Plant (RFP) in Colorado have been characterized by electron microscopy. The object of these studies was to determine the form of the contaminant radionuclide, so that it properties could be established [1]. Physical separation and radiochemical analysis determined that uranium contamination at Fernald was not present exclusively in any one size/density fraction [2]. The uranium-contamination resulted from aqueous and solid product spills, air-borne dust particles, and from the operation of an incinerator on site. At RFP the contamination was from the incineration of Pu-bearing materials. Further analysis by x-ray absorption spectroscopy indicated that the majority of the uranium was in the 6+ oxidation state [3].

scholarly journals On Two Mechanisms of X-Ray Generation in Comets

1985 ◽  
Vol 85 ◽  
pp. 365-368
Author(s):  
S. Ibadov
Keyword(s):  
High Temperature ◽  
Interplanetary Dust ◽  
Dust Particles ◽  
Interplanetary Dust Particles ◽  
Temperature Plasma ◽  
X Ray ◽  
Plasma Generation ◽  
High Temperature Plasma

AbstractThe intensity of solar X-radiation scattered by a comet is calculated and compared to the proper X-radiation of the comet due to impacts of cometary and interplanetary dust particles. Detection of X-radiation of dusty comets at small heliocentric distances (R ≤ 1 a.u.) is found to be an indicator of high-temperature plasma generation as result of grain collisions.

scholarly journals In situ dynamic X-ray micro-CT for additive manufactured parts

2021 ◽  
Vol 27 (S1) ◽  
pp. 2944-2945
Author(s):  
Jan Dewanckele ◽  
Frederik Coppens ◽  
Wesley De Boever ◽  
Marijn Boone ◽  
Luke Hunter
Keyword(s):  
Micro Ct ◽  
X Ray

scholarly journals Simple low dose radiography allows precise lung volume assessment in mice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amara Khan ◽  
Andrea Markus ◽  
Thomas Rittmann ◽  
Jonas Albers ◽  
Frauke Alves ◽  
...  
Keyword(s):  
Lung Function ◽  
Whole Body ◽  
Acquisition Time ◽  
Micro Ct ◽  
Lung Volumes ◽  
X Ray ◽  
Promising Tool ◽  
Volume Assessment ◽  
Set Up ◽  
Time Required

AbstractX-ray based lung function (XLF) as a planar method uses dramatically less X-ray dose than computed tomography (CT) but so far lacked the ability to relate its parameters to pulmonary air volume. The purpose of this study was to calibrate the functional constituents of XLF that are biomedically decipherable and directly comparable to that of micro-CT and whole-body plethysmography (WBP). Here, we developed a unique set-up for simultaneous assessment of lung function and volume using XLF, micro-CT and WBP on healthy mice. Our results reveal a strong correlation of lung volumes obtained from radiographic XLF and micro-CT and demonstrate that XLF is superior to WBP in sensitivity and precision to assess lung volumes. Importantly, XLF measurement uses only a fraction of the radiation dose and acquisition time required for CT. Therefore, the redefined XLF approach is a promising tool for preclinical longitudinal studies with a substantial potential of clinical translation.

scholarly journals Dynamic X-ray micro-CT insights of the recovery of ore bodies in presence of clay

2021 ◽  
Vol 27 (S1) ◽  
pp. 1034-1035
Author(s):  
Jan Dewanckele ◽  
Wesley De Boever ◽  
Andreas Grießer ◽  
Yanhong Wang ◽  
Fangli Meng
Keyword(s):  
Micro Ct ◽  
X Ray ◽  
Ore Bodies

X-ray micro-CT with a displaced detector array: Application to helical cone-beam reconstruction

2003 ◽  
Vol 30 (10) ◽  
pp. 2758-2761 ◽  
Author(s):  
Vinson Liu ◽  
Nicholas R. Lariviere ◽  
Ge Wang
Keyword(s):  
Detector Array ◽  
Cone Beam ◽  
Micro Ct ◽  
X Ray ◽  
Cone Beam Reconstruction

Automated segmentation of murine lung tumors in x-ray micro-CT images

2014 ◽  
Author(s):  
Joshua K. Y. Swee ◽  
Clare Sheridan ◽  
Elza de Bruin ◽  
Julian Downward ◽  
Francois Lassailly ◽  
...  
Keyword(s):  
Lung Tumors ◽  
Ct Images ◽  
Automated Segmentation ◽  
Micro Ct ◽  
Murine Lung ◽  
X Ray

scholarly journals A LabVIEW Platform for Preclinical Imaging Using Digital Subtraction Angiography and Micro-CT

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Cristian T. Badea ◽  
Laurence W. Hedlund ◽  
G. Allan Johnson
Keyword(s):  
Digital Subtraction Angiography ◽  
Functional Imaging ◽  
Imaging System ◽  
Micro Ct ◽  
Digital Subtraction ◽  
X Ray ◽  
Retrospective Gating ◽  
Dual Source ◽  
Labview Platform ◽  
And Control

CT and digital subtraction angiography (DSA) are ubiquitous in the clinic. Their preclinical equivalents are valuable imaging methods for studying disease models and treatment. We have developed a dual source/detector X-ray imaging system that we have used for both micro-CT and DSA studies in rodents. The control of such a complex imaging system requires substantial software development for which we use the graphical language LabVIEW (National Instruments, Austin, TX, USA). This paper focuses on a LabVIEW platform that we have developed to enable anatomical and functional imaging with micro-CT and DSA. Our LabVIEW applications integrate and control all the elements of our system including a dual source/detector X-ray system, a mechanical ventilator, a physiological monitor, and a power microinjector for the vascular delivery of X-ray contrast agents. Various applications allow cardiac- and respiratory-gated acquisitions for both DSA and micro-CT studies. Our results illustrate the application of DSA for cardiopulmonary studies and vascular imaging of the liver and coronary arteries. We also show how DSA can be used for functional imaging of the kidney. Finally, the power of 4D micro-CT imaging using both prospective and retrospective gating is shown for cardiac imaging.

Sign in / Sign up

Export Citation Format

Share Document