scholarly journals Optical Tomographic Image Reconstruction Based on Gradient Tree Calculation Method

2021 ◽  
Vol 2074 (1) ◽  
pp. 012014
Author(s):  
Jinlan Guan
Keyword(s):  
Optical Coherence Tomography ◽  
Image Reconstruction ◽  
Diffusion Equation ◽  
Calculation Method ◽  
Reconstruction Algorithm ◽  
Imaging Method ◽  
Tomographic Image ◽  
Optical Coherence ◽  
Tomographic Image Reconstruction ◽  
Reconstruction Methods

Abstract Optical coherence tomography is a new imaging method, which is widely used in many fields. This article introduces an iterative image reconstruction algorithm based on gradient trees. It also discusses image reconstruction methods containing void-like regions. It is proved that the image reconstruction based on the transportation model can overcome the shortcomings of the diffusion equation, and it can accurately reconstruct the optical tomographic image.

scholarly journals Local and Non-local Regularization Techniques in Emission (PET/SPECT) Tomographic Image Reconstruction Methods

2015 ◽  
Vol 29 (3) ◽  
pp. 394-402 ◽  
Author(s):  
Munir Ahmad ◽  
Tasawar Shahzad ◽  
Khalid Masood ◽  
Khalid Rashid ◽  
Muhammad Tanveer ◽  
...  
Keyword(s):  
Image Reconstruction ◽  
Tomographic Image ◽  
Local Regularization ◽  
Tomographic Image Reconstruction ◽  
Reconstruction Methods ◽  
Regularization Techniques ◽  
Non Local

scholarly journals Coherence tomography with broad bandwidth extreme ultraviolet and soft X-ray radiation

2021 ◽  
Vol 127 (4) ◽  
Author(s):  
S. Skruszewicz ◽  
S. Fuchs ◽  
J. J. Abel ◽  
J. Nathanael ◽  
J. Reinhard ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Near Infrared ◽  
Extreme Ultraviolet ◽  
Infrared Light ◽  
Imaging Method ◽  
Optical Coherence ◽  
Axial Resolution ◽  
Cross Sectional ◽  
X Ray ◽  
Broad Bandwidth

AbstractWe present an overview of recent results on optical coherence tomography with the use of extreme ultraviolet and soft X-ray radiation (XCT). XCT is a cross-sectional imaging method that has emerged as a derivative of optical coherence tomography (OCT). In contrast to OCT, which typically uses near-infrared light, XCT utilizes broad bandwidth extreme ultraviolet (XUV) and soft X-ray (SXR) radiation (Fuchs et al in Sci Rep 6:20658, 2016). As in OCT, XCT’s axial resolution only scales with the coherence length of the light source. Thus, an axial resolution down to the nanometer range can be achieved. This is an improvement of up to three orders of magnitude in comparison to OCT. XCT measures the reflected spectrum in a common-path interferometric setup to retrieve the axial structure of nanometer-sized samples. The technique has been demonstrated with broad bandwidth XUV/SXR radiation from synchrotron facilities and recently with compact laboratory-based laser-driven sources. Axial resolutions down to 2.2 nm have been achieved experimentally. XCT has potential applications in three-dimensional imaging of silicon-based semiconductors, lithography masks, and layered structures like XUV mirrors and solar cells.

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