Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging
In ultrasound tissue harmonic imaging (THI), it is preferred that the bandwidth of the array transducer covers at least the fundamental frequency f<sub>0</sub> for transmission and the second harmonic frequency 2f<sub>0</sub> for reception. However, it is challenging to devel...
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doaj-9e16b7ae22e1460fa90e1590aac01f812020-11-25T02:53:42ZengMDPI AGSensors1424-82202020-07-01203915391510.3390/s20143915Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic ImagingChan Yuk Park0Jin Ho Sung1Eun Young Jeong2Hee Su Lee3Jong Seob Jeong4Department of Medical Biotechnology, Dongguk University, Seoul 04620, KoreaDepartment of Medical Biotechnology, Dongguk University, Seoul 04620, KoreaDepartment of Medical Biotechnology, Dongguk University, Seoul 04620, KoreaDepartment of Medical Biotechnology, Dongguk University, Seoul 04620, KoreaDepartment of Medical Biotechnology, Dongguk University, Seoul 04620, KoreaIn ultrasound tissue harmonic imaging (THI), it is preferred that the bandwidth of the array transducer covers at least the fundamental frequency f<sub>0</sub> for transmission and the second harmonic frequency 2f<sub>0</sub> for reception. However, it is challenging to develop an array transducer with a broad bandwidth due to the single resonance characteristics of piezoelectric materials. In this study, we present an improved interleaved array transducer suitable for THI and a dedicated transducer fabrication scheme. The proposed array transducer has a novel structure in which conventional elements exhibiting f<sub>0</sub> resonant frequency and polarization-inverted elements exhibiting 2f<sub>0</sub> resonant frequency are alternately located, and the thicknesses of all piezoelectric elements are identical. The performance of the proposed method was demonstrated by finite element analysis (FEA) simulations and experiments using a fabricated prototype array transducer. Using the proposed technique, f<sub>0</sub> and 2f<sub>0</sub> frequency ultrasounds can be efficiently transmitted and received, respectively, resulting in a 90% broad bandwidth feature of the transducer. Thus, the proposed technique can be one of the potential ways to implement high resolution THI.https://www.mdpi.com/1424-8220/20/14/3915finite element analysis (FEA) simulationinterdigital bonding processinterleaved array transducerpolarization inversion techniquetissue harmonic imaging |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chan Yuk Park Jin Ho Sung Eun Young Jeong Hee Su Lee Jong Seob Jeong |
spellingShingle |
Chan Yuk Park Jin Ho Sung Eun Young Jeong Hee Su Lee Jong Seob Jeong Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging Sensors finite element analysis (FEA) simulation interdigital bonding process interleaved array transducer polarization inversion technique tissue harmonic imaging |
author_facet |
Chan Yuk Park Jin Ho Sung Eun Young Jeong Hee Su Lee Jong Seob Jeong |
author_sort |
Chan Yuk Park |
title |
Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging |
title_short |
Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging |
title_full |
Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging |
title_fullStr |
Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging |
title_full_unstemmed |
Interleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging |
title_sort |
interleaved array transducer with polarization inversion technique to implement ultrasound tissue harmonic imaging |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2020-07-01 |
description |
In ultrasound tissue harmonic imaging (THI), it is preferred that the bandwidth of the array transducer covers at least the fundamental frequency f<sub>0</sub> for transmission and the second harmonic frequency 2f<sub>0</sub> for reception. However, it is challenging to develop an array transducer with a broad bandwidth due to the single resonance characteristics of piezoelectric materials. In this study, we present an improved interleaved array transducer suitable for THI and a dedicated transducer fabrication scheme. The proposed array transducer has a novel structure in which conventional elements exhibiting f<sub>0</sub> resonant frequency and polarization-inverted elements exhibiting 2f<sub>0</sub> resonant frequency are alternately located, and the thicknesses of all piezoelectric elements are identical. The performance of the proposed method was demonstrated by finite element analysis (FEA) simulations and experiments using a fabricated prototype array transducer. Using the proposed technique, f<sub>0</sub> and 2f<sub>0</sub> frequency ultrasounds can be efficiently transmitted and received, respectively, resulting in a 90% broad bandwidth feature of the transducer. Thus, the proposed technique can be one of the potential ways to implement high resolution THI. |
topic |
finite element analysis (FEA) simulation interdigital bonding process interleaved array transducer polarization inversion technique tissue harmonic imaging |
url |
https://www.mdpi.com/1424-8220/20/14/3915 |
work_keys_str_mv |
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1724725001097052160 |