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Sensors 2016, 16(11), 1906; doi:10.3390/s16111906

Effects of Non-Elevation-Focalized Linear Array Transducer on Ultrasound Plane-Wave Imaging

Shenzhen Institutes of Advanced Technology, the Chinese Academy of Science, 1068 Xueyuan Avenue, Shenzhen University Town, Xili, Nanshan, Shenzhen 518055, China
Authors to whom correspondence should be addressed.
Academic Editors: Xiaoning Jiang and Chao Zhang
Received: 1 August 2016 / Revised: 4 November 2016 / Accepted: 9 November 2016 / Published: 12 November 2016
(This article belongs to the Special Issue Acoustic Sensing and Ultrasonic Drug Delivery)
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Plane-wave ultrasound imaging (PWUS) has become an important method of ultrasound imaging in recent years as its frame rate has exceeded 10,000 frames per second, allowing ultrasound to be used for two-dimensional shear wave detection and functional brain imaging. However, compared to the traditional focusing and scanning method, PWUS images always suffer from a degradation of lateral resolution and contrast. To improve the image quality of PWUS, many different beamforming algorithms have been proposed and verified. Yet the influence of transducer structure is rarely studied. For this paper, the influence of using an acoustic lens for PWUS was evaluated. Two linear array transducers were fabricated. One was not self-focalized in the elevation direction (non-elevation-focalized transducer, NEFT); the other one was a traditional elevation-focalized transducer (EFT). An initial simulation was conducted to show the influence of elevation focusing. Then the images obtained with NEFT on a standard ultrasound imaging phantom were compared with those obtained with EFT. It was demonstrated that, in a relatively deep region, the contrast of an NEFT image is better than that of an EFT image. These results indicate that a more sophisticated design of ultrasound transducer would further improve the image quality of PWUS. View Full-Text
Keywords: ultrafast ultrasound imaging; acoustic lens; non-elevation-focalized transducer; image contrast ultrafast ultrasound imaging; acoustic lens; non-elevation-focalized transducer; image contrast

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, C.; Xiao, Y.; Xia, J.; Qiu, W.; Zheng, H. Effects of Non-Elevation-Focalized Linear Array Transducer on Ultrasound Plane-Wave Imaging. Sensors 2016, 16, 1906.

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