Research on the modulation factor of the constrained TV for optical deflection tomography reconstruction

2020 ◽  
Vol 28 (10) ◽  
pp. 1407-1422
Author(s):  
Huaxin Li ◽  
Bin Zhang ◽  
Huihua Kong ◽  
Jinxiao Pan
Keyword(s):  
Modulation Factor ◽  
Tomography Reconstruction

Embedded Gold Markers for Improved TEM/STEM Tomography Reconstruction

2008 ◽  
Author(s):  
Jian-Shing Luo ◽  
Chia-Chi Huang ◽  
Jeremy D. Russell
Keyword(s):  
3D Reconstruction ◽  
Feature Tracking ◽  
Semiconductor Device ◽  
Electron Tomography ◽  
Tracking Process ◽  
Carbon Coated ◽  
Novel Method ◽  
Tomography Reconstruction ◽  
Tilt Series ◽  
20 Nm

Abstract Electron tomography includes four main steps: tomography data acquisition, image processing, 3D reconstruction, and visualization. After acquisition, tilt-series alignments are performed. Two methods are used to align the tilt-series: cross-correlation and feature tracking. Normally, about 10-20 nm of fiducial markers, such as gold beads, are deposited onto one side of 100 mesh carbon-coated grids during the feature-tracking process. This paper presents a novel method for preparing electron tomography samples with gold beads inside to improve the feature tracking process and quality of 3D reconstruction. Results show that the novel electron tomography sample preparation method improves image alignment, which is essential for successful tomography in many contemporary semiconductor device structures.

scholarly journals Aneurysm Arising at the Origin of a Duplicated Middle Cerebral Artery

2021 ◽  
pp. 446-450
Author(s):  
Jean Roch Alliez ◽  
Luis Manera
Keyword(s):  
Computed Tomography ◽  
Subarachnoid Haemorrhage ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
World Federation ◽  
Treatment Procedure ◽  
3D Computed Tomography ◽  
Ruptured Aneurysms ◽  
Tomography Reconstruction ◽  
Computed Tomography Reconstruction

A duplicated middle cerebral artery (DMCA) is a common anomaly. However, aneurysms arising from the origin of a DMCA are extremely rare. A 22-year-old female was admitted to our hospital with a World Federation of Neurosurgical Societies grade 2 subarachnoid haemorrhage. Four-vessel angiography revealed a DMCA and an aneurysm arising from the origin of this artery. The aneurysm was successfully treated by embolization, and the patient was discharged 2 weeks later. Ruptured aneurysms arising from the origin of a DMCA can be successfully treated by embolization. These aneurysms are small and 3D-computed tomography reconstruction is mandatory to detect them. It is important to preserve the DMCA during the treatment procedure.

scholarly journals Temporal sparsity exploiting nonlocal regularization for 4D computed tomography reconstruction

2016 ◽  
Vol 24 (2) ◽  
pp. 207-219 ◽  
Author(s):  
Daniil Kazantsev ◽  
Enyu Guo ◽  
Anders Kaestner ◽  
William R. B. Lionheart ◽  
Julian Bent ◽  
...  
Keyword(s):  
Computed Tomography ◽  
4D Computed Tomography ◽  
Tomography Reconstruction ◽  
Computed Tomography Reconstruction ◽  
Nonlocal Regularization

scholarly journals Evaluation of the optimal combinations of modulation factor and pitch for Helical TomoTherapy plans made with TomoEdge using Pareto optimal fronts

2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Geert De Kerf ◽  
Dirk Van Gestel ◽  
Lobke Mommaerts ◽  
Danielle Van den Weyngaert ◽  
Dirk Verellen
Keyword(s):  
Helical Tomotherapy ◽  
Pareto Optimal ◽  
Modulation Factor ◽  
Pareto Optimal Fronts
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