Elastography measurement for soft material using digital holography

Singh, Amandeep and John, Renu and Nasution, Aulia M. and Wahyuono, Ruri Agung and Hatta, Agus M. (2021) Elastography measurement for soft material using digital holography. In: 4th International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2020, 1-2 December 2020.

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Abstract

The quantitative and qualitative studies of biomechanical properties is an important diagnostic tool for investigating abnormal tissues. Elastography is an experimental technique that is used to characterize soft materials including tissues collagen and fat etc. The existing ultrasound and magnetic-based elastography methods are limited by low spatial resolution and small imaging depth. The optical methods have enormous potential to quantify the elastographic measurement with microscale resolution. So, digital holography can establish a new platform for measuring the bulkelastographic properties of the soft tissues. In this work, we calculate the phase map of the Surface Acoustic Wave (SAW) produced by piezo-transducer on the surface of the tissue phantom using the Digital Holography (DH) imaging method. The temporal phase-shifting algorithm is employed to reconstruct the phase map of the SAW for accurate quantification of surface wave velocity. The precise calculation of surface wave velocity gives the direct measurement of the mechanical parameter like elastic modulus and shear modulus. The preliminary results obtained from the proposed method can be used to facilitate non-invasive or minimally invasive imaging with in-vivo and ex-vivo applications.

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IITH Creators:

IITH Creators	ORCiD
Singh, Amandeep	UNSPECIFIED
John, Renu	https://orcid.org/0000-0003-3254-2472

Item Type:

Conference or Workshop Item (Paper)

Uncontrolled Keywords:

Acoustic wave velocity; Acoustic waves; Acoustics; Elastic moduli; Histology; Holography; Medical imaging; Shear flow; Soft materials,; Surface waves; Ultrasonic applications; Wave propagation;Accurate quantifications; Biomechanical properties; Digital holography; Experimental techniques; Mechanical parameters; Minimally invasive imaging; Surface acoustic waves; Surface wave velocity

Subjects:

Materials Engineering > Materials engineering
Materials Engineering > Nanostructured materials, porous materials
Materials Engineering > Organic materials

Divisions:

Department of Biomedical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

25 Jun 2021 06:12

Last Modified:

25 Jun 2021 06:12

URI:

http://raiithold.iith.ac.in/id/eprint/8005