Novel measurement setup for evaluation of left ventricle motion and strain tracking methods

Beata Leśniak-Plewińska; Jakub Żmigrodzki; Szymon Cygan; Krzysztof Kałużyński

doi:10.1117/12.2254539

13 March 2017 Novel measurement setup for evaluation of left ventricle motion and strain tracking methods

Beata Leśniak-Plewińska, Jakub Żmigrodzki, Szymon Cygan, Krzysztof Kałużyński

Proceedings Volume 10139, Medical Imaging 2017: Ultrasonic Imaging and Tomography; 1013919 (2017) https://doi.org/10.1117/12.2254539
Event: SPIE Medical Imaging, 2017, Orlando, Florida, United States

Abstract

Cardiac strain quantification using ultrasound is an active area of research. Physical left ventricle (LV) model play a significant role in the evaluation and development of myocardium strain imaging techniques. Several LV models have been reported. In spite of increasing interest in LV twist, only one of them implements torsional deformation, but it does not allow long axis views. This work presents a novel prototype of physical LV model and dedicated measurement setup which do not have this limitation. The model was made of Poly(vinyl alcohol) cryogel (PVA-c). The solution for the chamber part was doped with scattering particles to imitate the echogenicity of myocardium and to facilitate automatic segmentation of the chamber wall. The model was mounted in a measurement setup allowing computer controlled linear motion of the basis, rotation of the apex and inflation of the ventricle and the use both ultrasound imaging planes: short (SAX) and long axis (LAX). During preliminary tests RF signals as well as B-mode and M-mode images were acquired. Experiment results confirmed the possibility of forcing controlled deformation of the presented LV model wall, including elongation/shortening in the long axis direction and twist around this axis. In consequence, the model can mimic deformations of the LV wall to a large extent. The chamber wall can be segmented in B-mode images in both projections. The model with the measurement setup may be used in development and validation of a wide range of echocardiographic diagnostic procedures including segmentation, strain estimation and 3D data processing.

Citation Download Citation

Beata Leśniak-Plewińska, Jakub Żmigrodzki, Szymon Cygan, and Krzysztof Kałużyński "Novel measurement setup for evaluation of left ventricle motion and strain tracking methods", Proc. SPIE 10139, Medical Imaging 2017: Ultrasonic Imaging and Tomography, 1013919 (13 March 2017); https://doi.org/10.1117/12.2254539

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KEYWORDS

Motion models

Ultrasonography

3D modeling

Heart

Data modeling

Motion measurement

Acoustics

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