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Use of synchrotron-based diffraction-enhanced imaging for visualization of soft tissues in invertebrates

Rao, Donepudi Venkateswara and Swapna, Medasani and Cesareo, Roberto and Brunetti, Antonio and Zhong, Zhong and Akatsuka, Takao and Yuasa, Tetsuya and Takeda, Tohoru and Gigante, Giovanni Ettore (2010) Use of synchrotron-based diffraction-enhanced imaging for visualization of soft tissues in invertebrates. Applied Radiation and Isotopes, Vol. 68 (9), p. 1687-1693. eISSN 1872-9800. Article.

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DOI: 10.1016/j.apradiso.2010.04.001

Abstract

Images of terrestrial and marine invertebrates (snails and bivalves) have been obtained by using an X-ray phase-contrast imaging technique, namely, synchrotron-based diffraction-enhanced imaging. Synchrotron X-rays of 20, 30 and 40 keV were used, which penetrate deep enough into animal soft tissues. The phase of X-ray photons shifts slightly as they traverse an object, such as animal soft tissue, and interact with its atoms. Biological features, such as shell morphology and animal physiology, have been visualized. The contrast of the images obtained at 40 keV is the best. This optimum energy provided a clear view of the internal structural organization of the soft tissue with better contrast. The contrast is higher at edges of internal soft-tissue structures. The image improvements achieved with the diffraction-enhanced imaging technique are due to extinction, i.e., elimination of ultra-small-angle scattering. They enabled us to identify a few embedded internal shell features, such as the origin of the apex, which is the firmly attached region of the soft tissue connecting the umbilicus to the external morphology. Diffraction-enhanced imaging can provide high-quality images of soft tissues valuable for biology.

Item Type:Article
ID Code:5619
Status:Published
Refereed:Yes
Uncontrolled Keywords:Diffraction-enhanced imaging, synchrotron, invertebrates, soft tissue
Subjects:Area 02 - Scienze fisiche > FIS/07 Fisica applicata (a beni culturali, ambientali, biologia e medicina)
Divisions:001 Università di Sassari > 03 Istituti > Matematica e fisica
Publisher:Pergamon / Elsevier
eISSN:1872-9800
Copyright Holders:© 2010 Elsevier
Deposited On:09 Mar 2011 10:34

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