scholarly journals The effect of electronically steering a phased array ultrasound transducer on near-field tissue heating

2011 ◽  
Vol 38 (9) ◽  
pp. 4971-4981 ◽  
Author(s):  
Allison Payne ◽  
Urvi Vyas ◽  
Nick Todd ◽  
Joshua de Bever ◽  
Douglas A. Christensen ◽  
...  
Keyword(s):  
Phased Array ◽  
Near Field ◽  
Ultrasound Transducer ◽  
Tissue Heating ◽  
Phased Array Ultrasound ◽  
Array Ultrasound

Development of a 20-MHz wide-bandwidth PMN-PT single crystal phased-array ultrasound transducer

Ultrasonics ◽  
2017 ◽  
Vol 73 ◽  
pp. 181-186 ◽  
Author(s):  
Chi-Man Wong ◽  
Yan Chen ◽  
Haosu Luo ◽  
Jiyan Dai ◽  
Kwok-Ho Lam ◽  
...  
Keyword(s):  
Single Crystal ◽  
Phased Array ◽  
Ultrasound Transducer ◽  
Wide Bandwidth ◽  
Phased Array Ultrasound ◽  
Array Ultrasound

scholarly journals Prototyping of a High Frequency Phased Array Ultrasound Transducer on a Piezoelectric Thick Film

2019 ◽  
pp. 3-10 ◽  
Keyword(s):  
Thick Film ◽  
High Frequency ◽  
Phased Array ◽  
Beam Steering ◽  
Thick Films ◽  
Diagnostic Tools ◽  
Ultrasound Transducer ◽  
Ultrasound Diagnostics ◽  
Phased Array Ultrasound ◽  
Array Ultrasound

A process including virtual prototyping of a high frequency phased array ultrasound transducer on a piezoelectric thick film using a finite element method (FEM) is shown. Generated FEM models were based on PMN-PT (Pb(Mg1/3Nb2/3)O3-PbTiO3) thick films, made by sol-gel technique, with the thickness vibrational mode resonant frequency of each film being close to 28.5MHz. Ultrasound transducers with such characteristics, due to their size and high frequency, are suitable for use in small medical diagnostic tools intended for use in delicate and sensitive areas (for example in ophthalmology and dermatology). With respect to their size, the transducers should retain very good focusing, beam steering and other advantages that phased array layout offers. To ensure an optimal performance of the phased array ultrasound transducer on such a piezoelectric thick film, several electrode patterns were used and tested in FEM simulations with the end goal of getting best performance from the PMN-PT thick films. A 64-element configuration was shown to be a promising technological solution for ophthalmological ultrasound diagnostics.

Sign in / Sign up

Export Citation Format

Share Document