Dark-field signal extraction in propagation-based phase-contrast imaging

A method for extracting the dark-field signal in propagation-based phase-contrast imaging is proposed. In the case of objects consisting predominantly of a single material, or several different materials with similar ratios of the real decrement to the imaginary part of the complex refractive index, the proposed method requires a single image for extraction of the dark-field signal in two-dimensional projection imaging. In the case of three-dimensional tomographic imaging, the method needs only one image to be collected at each projection angle. Initial examples using simulated and experimental data indicate that this method can improve visualization of small sharp features inside a larger object, e.g. the visualization of microcalcifications in propagation-based x-ray breast cancer imaging. It is suggested that the proposed approach may be useful in other forms of biomedical imaging, where it can help one to obtain additional small-angle scattering information without increasing the radiation dose to the sample.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:65

Enthalten in:

Physics in medicine and biology - 65(2020), 21 vom: 17. Nov., Seite 215029

Sprache:

Englisch

Beteiligte Personen:

Gureyev, T E [VerfasserIn]
Paganin, D M [VerfasserIn]
Arhatari, B [VerfasserIn]
Taba, S T [VerfasserIn]
Lewis, S [VerfasserIn]
Brennan, P C [VerfasserIn]
Quiney, H M [VerfasserIn]

Links:

Volltext

Themen:

Journal Article
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 24.12.2020

Date Revised 06.02.2022

published: Electronic

Citation Status MEDLINE

doi:

10.1088/1361-6560/abac9d

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM313312346