Image reconstruction for ultrasound computed tomography by use of the regularized dual averaging method

2017 ◽  
Author(s):  
Thomas P. Matthews ◽  
Kun Wang ◽  
Cuiping Li ◽  
Neb Duric ◽  
Mark A. Anastasio
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
Averaging Method ◽  
Ultrasound Computed Tomography ◽  
Dual Averaging

scholarly journals Regularization of image reconstruction in ultrasound computed tomography

2015 ◽  
Author(s):  
Mailyn Perez-Liva ◽  
Joaquin L. Herraiz ◽  
Luis Medina-Valdes ◽  
Jorge Camacho ◽  
Carlos Fritsch ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
Ultrasound Computed Tomography

scholarly journals Imaging of Increasing Damage in Steel Plates Using Lamb Waves and Ultrasound Computed Tomography

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5114
Author(s):  
Monika Zielińska ◽  
Magdalena Rucka
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
Lamb Waves ◽  
Steel Plates ◽  
Ultrasound Tomography ◽  
The Real ◽  
Ultrasound Computed Tomography ◽  
Circular Holes ◽  
Non Destructive

This paper concerns the inspection of steel plates, with particular emphasis on the assessment of increasing damage. Non-destructive tests were performed on four plates, one of which was undamaged, while the remaining three had defects in the form of circular holes with diameters of 2, 5 and 10 cm. Guided Lamb waves were used in the research, and the image reconstruction was performed using ultrasound computed tomography. The damage size was estimated by tracking the real course of rays and densifying the pixel grid into which the object was divided. The results showed the great potential of ultrasound tomography in detecting defects in steel elements, together with the possibility of estimating damage size.

Comparison of Four Forward Models for Breast Imaging in Ultrasound Computed Tomography

2019 ◽  
Vol 28 (4) ◽  
pp. 805-816 ◽  
Author(s):  
Ruijing Li ◽  
Houjin Chen ◽  
Yahui Peng ◽  
Jupeng Li
Keyword(s):  
Computed Tomography ◽  
Breast Imaging ◽  
Forward Models ◽  
Ultrasound Computed Tomography
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