A 32-Channel Low-Intensity Focused Ultrasound Stimulator Using Phased Array Miniature Transducers for Enhanced Targeting Accuracy in Neuromuscular Rehabilitation System

Title
A 32-Channel Low-Intensity Focused Ultrasound Stimulator Using Phased Array Miniature Transducers for Enhanced Targeting Accuracy in Neuromuscular Rehabilitation System
Authors
윤인찬김형민오성진
Keywords
ultrasound stimulator; phased array transducers; high targeting accuracy; intensity focused ultrasound; neuromuscular rehabilitation
Issue Date
2017-03
Publisher
Sensors and materials
Citation
VOL 29, NO 3-271
Abstract
Low-intensity pulsed ultrasound (LIPUS) stimulation can be used for noninvasive neuromuscular rehabilitation. For increasing stimulation efficiency, focused ultrasound (FUS) providing high-energy concentration should be used for LIPUS stimulation. However, because of difficulties in fine focus control, it is difficult to accurately target a stimulation site with conventional FUS stimulators using a single transducer. For implementing highly accurate targeting with a finely adjustable focal point, a 32-channel low-intensity focused ultrasound (LIFU) stimulator using phased array miniature piezoelectric transducers is presented in this paper. In the presented stimulator, a beamforming technology is used to delicately control the focal point without the difficulties in the conventional FUS stimulators. The experimental results show that the focal point was successfully adjusted in horizontal and vertical directions with nearly zero targeting errors. The ultrasound energy with the spatial peak-pulse average intensity (ISPPA) of 0.48 W/cm2 was concentrated in a focusing area of 1.05 mm radius, which is sufficiently small to target peripheral nerves or a bundle of muscle fibers.
URI
http://pubs.kist.re.kr/handle/201004/65502
ISSN
0914-4935
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE