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Title: Holotomography Phase-Retrieval

Abstract

Holotomography is a non-destructive x-ray imaging technique which allows to visualize the interior morphology of object without damaging them. It is similar to x-ray computed tomography (CT), but unlike conventional CT, which is based on the attenuation of x-rays passing through the object, holotomography exploits the phase shift caused by the sample. This phase-contrast imaging allows to increase image contrast by recovering refractive index of materials and is proven to be more sensitive to density variations than conventional absorption-based X-ray imaging when applied to low-Z materials. In holotomography, the phase is retrieved by measuring the variations in intensity of the object at different sample to detector distances. Several algorithms exist to perform this task such as, contrast transfer function (CTF), transport of intensity equation (TIE), and a mixed approach which combine both TIE and CTF.

Developers:
 [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Release Date:
Project Type:
Open Source, Publicly Available Repository
Software Type:
Scientific
Version:
1.0
Licenses:
GNU General Public License v2.0
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)

Primary Award/Contract Number:
AC52-07NA27344
Code ID:
34332
Site Accession Number:
1007271
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Origin:
United States

Citation Formats

Forier, Jean Baptiste, and USDOE National Nuclear Security Administration. Holotomography Phase-Retrieval. Computer software. https://www.osti.gov//servlets/purl/1599369. Vers. 1.0. USDOE National Nuclear Security Administration (NNSA). 1 Jan. 2020. Web. doi:10.11578/dc.20200213.1.
Forier, Jean Baptiste, & USDOE National Nuclear Security Administration. (2020, January 1). Holotomography Phase-Retrieval (Version 1.0) [Computer software]. https://www.osti.gov//servlets/purl/1599369. doi:10.11578/dc.20200213.1.
Forier, Jean Baptiste, and USDOE National Nuclear Security Administration. Holotomography Phase-Retrieval. Computer software. Version 1.0. January 1, 2020. https://www.osti.gov//servlets/purl/1599369. doi:10.11578/dc.20200213.1.
@misc{osti_1599369,
title = {Holotomography Phase-Retrieval, Version 1.0},
author = {Forier, Jean Baptiste and USDOE National Nuclear Security Administration},
abstractNote = {Holotomography is a non-destructive x-ray imaging technique which allows to visualize the interior morphology of object without damaging them. It is similar to x-ray computed tomography (CT), but unlike conventional CT, which is based on the attenuation of x-rays passing through the object, holotomography exploits the phase shift caused by the sample. This phase-contrast imaging allows to increase image contrast by recovering refractive index of materials and is proven to be more sensitive to density variations than conventional absorption-based X-ray imaging when applied to low-Z materials. In holotomography, the phase is retrieved by measuring the variations in intensity of the object at different sample to detector distances. Several algorithms exist to perform this task such as, contrast transfer function (CTF), transport of intensity equation (TIE), and a mixed approach which combine both TIE and CTF.},
url = {https://www.osti.gov//servlets/purl/1599369},
doi = {10.11578/dc.20200213.1},
year = {2020},
month = {1},
note =
}

Software:
Publicly Accessible Repository
https://github.com/jbforien/phaseCT

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