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Title: Enhanced visualization of fine needles under sonographic guidance using a MEMS actuator
Authors: Shen, Zhiyuan
Zhou, Yufeng
Miao, Jianmin
Vu, Kien Fong
Keywords: Biopsy
DRNTU::Engineering::Mechanical engineering
Ultrasound Imaging
Issue Date: 2015
Source: Shen, Z., Zhou, Y., Miao, J., & Vu, K. F. (2015). Enhanced visualization of fine needles under sonographic guidance using a MEMS actuator. Sensors, 15(2), 3107-3115. doi:10.3390/s150203107
Series/Report no.: Sensors
Abstract: Localization of a needle tip is important for biopsy examinations in clinics. However, the needle tip is sometimes difficult to discern under the guidance of sonography due to its poor visibility. A mini actuator that radiates a low-intensity ultrasound wave was manufactured using micro-electro-mechanical system (MEMS) technology. Interference between the radiated and diagnostic ultrasound pulses was observed as bright lines in the B-mode ultrasound image, from which the mini actuator could be recognized with ease. Because the distance between the mini actuator and the needle tip is fixed, the needle tip can be determined despite its inconsistent appearance in the sonography. Both gel phantom and ex vivo tissue evaluation showed that the needle tip can be determined reliably utilizing the acoustic interference pattern.
ISSN: 1424-8220
DOI: 10.3390/s150203107
Rights: © 2015 by the authors; licensee MDPI, Basel, Switzerland. This is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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