Tomographic reconstruction of two-dimensional radiated power distribution during impurity injection in KSTAR plasmas using an infrared imaging video bolometer

2018 ◽  
Vol 18 (4) ◽  
pp. 461-468 ◽  
Author(s):  
Juhyeok Jang ◽  
Wonho Choe ◽  
B.J. Peterson ◽  
D.C. Seo ◽  
K. Mukai ◽  
...  
Keyword(s):  
Power Distribution ◽  
Infrared Imaging ◽  
Tomographic Reconstruction ◽  
Two Dimensional ◽  
Radiated Power

scholarly journals Removing multiple outliers and single-crystal artefacts from X-ray diffraction computed tomography data

2015 ◽  
Vol 48 (6) ◽  
pp. 1943-1955 ◽  
Author(s):  
Antonios Vamvakeros ◽  
Simon D. M. Jacques ◽  
Marco Di Michiel ◽  
Vesna Middelkoop ◽  
Christopher K. Egan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Single Crystal ◽  
Tomographic Reconstruction ◽  
Projection Data ◽  
Data Sets ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffraction Patterns ◽  
Tomography Data

This paper reports a simple but effective filtering approach to deal with single-crystal artefacts in X-ray diffraction computed tomography (XRD-CT). In XRD-CT, large crystallites can produce spots on top of the powder diffraction rings, which, after azimuthal integration and tomographic reconstruction, lead to line/streak artefacts in the tomograms. In the simple approach presented here, the polar transform is taken of collected two-dimensional diffraction patterns followed by directional median/mean filtering prior to integration. Reconstruction of one-dimensional diffraction projection data sets treated in such a way leads to a very significant improvement in reconstructed image quality for systems that exhibit powder spottiness arising from large crystallites. This approach is not computationally heavy which is an important consideration with big data sets such as is the case with XRD-CT. The method should have application to two-dimensional X-ray diffraction data in general where such spottiness arises.

Two-dimensional optical power distribution of side-out-coupled radiation from tilted FBGs in multimode fibre

2003 ◽  
Vol 39 (8) ◽  
pp. 651 ◽  
Author(s):  
K. Zhou ◽  
G. Simpson ◽  
X. Chen ◽  
L. Zhang ◽  
I. Bennion
Keyword(s):  
Power Distribution ◽  
Optical Power ◽  
Two Dimensional

scholarly journals Two-dimensional AXUV-based radiated power density diagnostics on NSTX-U

2014 ◽  
Vol 85 (11) ◽  
pp. 11D856 ◽  
Author(s):  
I. Faust ◽  
L. Delgado-Aparicio ◽  
R. E. Bell ◽  
K. Tritz ◽  
A. Diallo ◽  
...  
Keyword(s):  
Power Density ◽  
Two Dimensional ◽  
Radiated Power ◽  
Density Diagnostics

Two-dimensional ion temperature measurement by application of tomographic reconstruction to Doppler spectroscopy

2013 ◽  
Vol 53 (9) ◽  
pp. 093027 ◽  
Author(s):  
H. Tanabe ◽  
A. Kuwahata ◽  
H. Oka ◽  
M. Annoura ◽  
H. Koike ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Tomographic Reconstruction ◽  
Two Dimensional ◽  
Ion Temperature ◽  
Doppler Spectroscopy

Power distribution in two-dimensional optical network channels

1996 ◽  
Vol 35 (11) ◽  
pp. 1911
Author(s):  
Dong-Xue Wang ◽  
Mohammad A. Karim
Keyword(s):  
Power Distribution ◽  
Optical Network ◽  
Two Dimensional

Three-Dimensional CT Reconstruction in Midfacial Surgery

1988 ◽  
Vol 98 (1) ◽  
pp. 48-52 ◽  
Author(s):  
Lawrence J. Marentette ◽  
Robert H. Maisel
Keyword(s):  
Surgical Planning ◽  
Preoperative Planning ◽  
Tomographic Reconstruction ◽  
Three Dimensional ◽  
Autogenous Bone ◽  
Two Dimensional ◽  
Ct Reconstruction ◽  
Skeletal Deformity ◽  
Dimensional Image ◽  
Two Dimensional Image

Correct preoperative planning is an essential aspect of any surgical procedure and it is equally important when midfacial reconstruction is contemplated. Conventional methods include standard radiographic views, plain tomography, photography, and computerized tomography. All of these methods produce a two-dimensional image of the patient. Three-dimensional computerized tomographic reconstruction allows the surgeon to visualize the entire facial skeletal deformity. The three-dimensional image produced also allows comparison of the deformity to surrounding normal structures, and thus makes the correction of facial asymmetries more precise. This new modality is particularly useful in the preoperative planning for patients with zygomaticomaxillary defects that result from either trauma or maxillectomy. Illustrative examples of patients in whom autogenous bone graft zygomaticomaxillary reconstruction was performed, after trauma and subsequent to subtotal maxillectomy, are presented. The amount and exact placement of the grafts was determined preoperatively from the analysis of the three-dimensional CT reconstruction, and the surgical planning was thereby simplified.

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