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Title: Experimental study of transmission of a pulsed focused beam through a skull phantom in nonlinear regime

In the paper the use of receiving and radiating system, which allows to determine the parameters of bone by nonlinear pulse-echo technique and to image of brain structures through the skull bones, was proposed. Accuracy of the skull bone characterization is due to higher measured harmonic and is significantly better than in linear case. In the experimental part focused piezoelectric transducer with diameter 100 mm, focal distance 100 mm, the frequency of 1.092 MHz was used. It was shown that skull bone profiling can be performed with the use of 3rd harmonic since 1st harmonic can be used for visualization of the underlying objects. The use of wideband systems for both skull profiling and brain visualization is restricted by skull attenuation and resulting low effective sensitivity.
Authors:
; ; ;  [1] ;  [2] ;  [1] ;  [3]
  1. Physics Faculty, Moscow State University, Leninskie Gory, Moscow 119991 (Russian Federation)
  2. Andreyev Acoustics Institute, 4, Shvernik Street, Moscow 117036 (Russian Federation)
  3. (United States)
Publication Date:
OSTI Identifier:
22492637
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1685; Journal Issue: 1; Conference: 20. international symposium on nonlinear acoustics, Ecully (France), 29 Jun - 3 Jul 2015, 2. international sonic boom forum, Ecully (France), 29 Jun - 3 Jul 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; ATTENUATION; BEAMS; BRAIN; IMAGES; MHZ RANGE; NONLINEAR PROBLEMS; PHANTOMS; PIEZOELECTRICITY; PULSES; SENSITIVITY; SKULL; TRANSDUCERS; TRANSMISSION