Shallow U-Net deep learning approach for phase retrieval in propagation-based phase-contrast imaging

Author(s)
Li, Samuel Z
French, Matthew G
Pavlov, Konstantin M
Li, Heyang Thomas
Publication Date
2022
Abstract
<p>X-Ray Computed Tomography (CT) has revolutionised modern medical imaging. However, X-Ray CT imaging requires patients to be exposed to radiation, which can increase the risk of cancer. Therefore there exists an aim to reduce radiation doses for CT imaging without sacrificing image accuracy. This research combines phase retrieval with the ShallowU-Net CNN method to achieve the aim. This paper shows that a significant change in existing machine learning neural network algorithms could improve the X-ray phase retrieval in propagation-based phase-contrast imaging. This paper applies deep learning methods, through a variant of the existing U-Net architecture, named ShallowU-Net, to show that it is possible to perform two distance X-ray phase retrieval on composite materials by predicting a portion of the required data. ShallowU-Net is faster in training and in deployment. This method also performs data stretching and pre-processing, to reduce the numerical instability of the U-Net algorithm thereby improving the phase retrieval images.</p>
Citation
DEVELOPMENTS IN X-RAY TOMOGRAPHY XIV, v.12242
ISSN
0277-786X
Link
Publisher
Spie-Int Soc Optical Engineering
Title
Shallow U-Net deep learning approach for phase retrieval in propagation-based phase-contrast imaging
Type of document
Conference Publication
Entity Type
Publication

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