Next Article in Journal
Aquatic Debris Detection Using Embedded Camera Sensors
Next Article in Special Issue
The Utility and Limitations of Contrast-Enhanced Ultrasound for the Diagnosis and Treatment of Prostate Cancer
Previous Article in Journal
Compensation for the Variable Cyclic Error in Homodyne Laser Interferometers
Previous Article in Special Issue
A Flexible Ultrasound Transducer Array with Micro-Machined Bulk PZT
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(2), 3107-3115;

Enhanced Visualization of Fine Needles Under Sonographic Guidance Using a MEMS Actuator

School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Ave., Singapore 639798, Singapore
Department of Gastroenterology, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433, Singapore
Author to whom correspondence should be addressed.
Received: 16 December 2014 / Accepted: 27 January 2015 / Published: 30 January 2015
Full-Text   |   PDF [1247 KB, uploaded 2 February 2015]


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. View Full-Text
Keywords: biopsy; ultrasound imaging; acoustic interference; MEMS actuator biopsy; ultrasound imaging; acoustic interference; MEMS actuator
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).

Share & Cite This Article

MDPI and ACS Style

Shen, Z.; Zhou, Y.; Miao, J.; Vu, K.F. Enhanced Visualization of Fine Needles Under Sonographic Guidance Using a MEMS Actuator. Sensors 2015, 15, 3107-3115.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top