Exploring single-shot propagation and speckle based phase recovery techniques for object thickness estimation by using a polychromatic X-ray laboratory source

Diego Rosich; Margarita Chevalier; Adrián Belarra; Tatiana Alieva

doi:10.1117/1.JMI.11.4.043501

25 July 2024 Exploring single-shot propagation and speckle based phase recovery techniques for object thickness estimation by using a polychromatic X-ray laboratory source

Diego Rosich, Margarita Chevalier, Adrián Belarra, Tatiana Alieva

Author Affiliations +

Journal of Medical Imaging, Vol. 11, Issue 4, 043501 (July 2024). https://doi.org/10.1117/1.JMI.11.4.043501

Abstract

Purpose

Propagation and speckle-based techniques allow reconstruction of the phase of an X-ray beam with a simple experimental setup. Furthermore, their implementation is feasible using low-coherence laboratory X-ray sources. We investigate different approaches to include X-ray polychromaticity for sample thickness recovery using such techniques.

Approach

Single-shot Paganin (PT) and Arhatari (AT) propagation-based and speckle-based (ST) techniques are considered. The radiation beam polychromaticity is addressed using three different averaging approaches. The emission-detection process is considered for modulating the X-ray beam spectrum. Reconstructed thickness of three nylon-6 fibers with diameters in the millimeter-range, placed at various object-detector distances are analyzed. In addition, the thickness of an in-house made breast phantom is recovered by using multi-material Paganin’s technique (MPT) and compared with micro-CT data.

Results

The best quantitative result is obtained for the PT and ST combined with sample thickness averaging (TA) approach that involves individual thickness recovery for each X-ray spectral component and the smallest considered object-detector distance. The error in the recovered fiber diameters for both techniques is <4%, despite the higher noise level in ST images. All cases provide estimates of fiber diameter ratios with an error of 3% with respect to the nominal diameter ratios. The breast phantom thickness difference between MPT-TA and micro-CT is about 10%.

Conclusions

We demonstrate the single-shot PT-TA and ST-TA techniques feasibility for thickness recovery of millimeter-sized samples using polychromatic microfocus X-ray sources. The application of MPT-TA for thicker and multi-material samples is promising.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

Citation Download Citation

Diego Rosich, Margarita Chevalier, Adrián Belarra, and Tatiana Alieva "Exploring single-shot propagation and speckle based phase recovery techniques for object thickness estimation by using a polychromatic X-ray laboratory source," Journal of Medical Imaging 11(4), 043501 (25 July 2024). https://doi.org/10.1117/1.JMI.11.4.043501

Received: 7 September 2023; Accepted: 2 July 2024; Published: 25 July 2024

ACCESS THE FULL ARTICLE

JOURNAL ARTICLE
14 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

X-rays

Phase recovery

Diffusers

Speckle

Breast

X-ray sources

Adipose tissue

Purpose

Approach

Results

Conclusions

Show All Keywords

Keywords/Phrases

Search In:

Publication Years