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A study on the beamforming system with reconfigurable focusing depth for ultrasound-enhanced thrombolysis

Title
A study on the beamforming system with reconfigurable focusing depth for ultrasound-enhanced thrombolysis
Authors
Song, Hi YuenKim, Min KyoungCho, Min GyuLee, Yang HunOh, Inn YealJung, Joon TaekChoi, Hong SooPark, Chul Soon
DGIST Authors
Choi, Hong Soo
Issue Date
2015
Citation
2014 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014
Type
Conference
Article Type
Conference Paper
ISBN
9780000000000
Abstract
In order to dissolve clots within blood vessels located in various parts of the human body with one sonothrombolysis application, the device employed should be able to control the focal depth where acoustic energy is focused. This paper presents such an ultrasound beamforming system with reconfigurable focal depth. It consists of an annular piezoelectric micromachined ultrasonic transducer (pMUT) array of 1 cm radius, and a beamforming unit that is composed of an ARM processor and a driving circuit. The measured peak intensity at the focal point of 13 mm is 1.35 W/cm2, and the average intensity of the -3 dB focal dimension from the peak intensity is 933 mW/cm. The proposed system operating at 1.21 MHz could be used for ultrasound-accelerated thrombolysis with an intensity that is above typical diagnostic levels at the focusing point, and also with a reconfigurable focusing depth. © 2014 IEEE.
URI
http://hdl.handle.net/20.500.11750/5486
DOI
10.1109/IMWS-BIO.2014.7032450
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • Author Choi, Hong Soo Bio-Micro Robotics Lab
  • Research Interests Micro/Nano robot; Neural prostheses; MEMS; BMI; MEMS/NEMS; BioMEMS; MEMS 초음파 트랜스듀스; 인공와우
Files:
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Collection:
Department of Robotics EngineeringBio-Micro Robotics Lab2. Conference Papers


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