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Feasibility of measuring acoustic streaming for improved diagnosis of rhinosinusitis

Jönsson, Peter; Sahlstrand Johnson, Pernilla LU ; Holmer, Nils-Gunnar LU ; Persson, Hans W LU ; Jannert, Magnus LU and Jansson, Tomas LU (2008) In Ultrasound in Medicine and Biology 34(2). p.228-238
Abstract
No noninvasive methods exist currently with the capability of distinguishing between various stages of a sinus infection. We studied a method based on induced acoustic streaming in the accumulated fluid within the maxillary sinuses. The hypothesis was that acoustic streaming will not be induced at clinically acceptable intensity levels in infectious mucous fluid because of its high viscosity, whereas detected acoustic streaming is a strong indication that the sinus content is a noninfectious serous fluid. As a model, an anthropomorphic sinus phantom with bovine cortical bone to mimic the bone surrounding the maxillary sinus was constructed. Milk (1.5% fat content) was used as model fluid. From fluid and bone attenuation measurements, an... (More)
No noninvasive methods exist currently with the capability of distinguishing between various stages of a sinus infection. We studied a method based on induced acoustic streaming in the accumulated fluid within the maxillary sinuses. The hypothesis was that acoustic streaming will not be induced at clinically acceptable intensity levels in infectious mucous fluid because of its high viscosity, whereas detected acoustic streaming is a strong indication that the sinus content is a noninfectious serous fluid. As a model, an anthropomorphic sinus phantom with bovine cortical bone to mimic the bone surrounding the maxillary sinus was constructed. Milk (1.5% fat content) was used as model fluid. From fluid and bone attenuation measurements, an ultrasound frequency of about 5 MHz was estimated to produce the highest acoustic streaming in the sinus phantom. Simulations of the acoustic streaming in a sealed cavity also showed that the width of the ultrasound beam should be about half the size of the cavity to optimize the streaming velocity. With a 4.9-MHz continuous-wave transducer operating at a spatial peak temporal average intensity of 640 mW/cm(2), an acoustic streaming velocity of 0.19 cm/s was generated and detected in the sinus phantom. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
simulations, viscosity, attenuation, sinus phantom, sinusitis, acoustic streaming, ultrasound
in
Ultrasound in Medicine and Biology
volume
34
issue
2
pages
228 - 238
publisher
Elsevier
external identifiers
  • wos:000253060800007
  • scopus:38349113865
ISSN
0301-5629
DOI
10.1016/j.ultrasmedbio.2007.06.022
language
English
LU publication?
yes
id
4df84b4a-e7d5-4828-9e55-22b7e1eb3312 (old id 1193909)
date added to LUP
2008-09-10 10:05:16
date last changed
2017-01-01 05:12:48
@article{4df84b4a-e7d5-4828-9e55-22b7e1eb3312,
  abstract     = {No noninvasive methods exist currently with the capability of distinguishing between various stages of a sinus infection. We studied a method based on induced acoustic streaming in the accumulated fluid within the maxillary sinuses. The hypothesis was that acoustic streaming will not be induced at clinically acceptable intensity levels in infectious mucous fluid because of its high viscosity, whereas detected acoustic streaming is a strong indication that the sinus content is a noninfectious serous fluid. As a model, an anthropomorphic sinus phantom with bovine cortical bone to mimic the bone surrounding the maxillary sinus was constructed. Milk (1.5% fat content) was used as model fluid. From fluid and bone attenuation measurements, an ultrasound frequency of about 5 MHz was estimated to produce the highest acoustic streaming in the sinus phantom. Simulations of the acoustic streaming in a sealed cavity also showed that the width of the ultrasound beam should be about half the size of the cavity to optimize the streaming velocity. With a 4.9-MHz continuous-wave transducer operating at a spatial peak temporal average intensity of 640 mW/cm(2), an acoustic streaming velocity of 0.19 cm/s was generated and detected in the sinus phantom.},
  author       = {Jönsson, Peter and Sahlstrand Johnson, Pernilla and Holmer, Nils-Gunnar and Persson, Hans W and Jannert, Magnus and Jansson, Tomas},
  issn         = {0301-5629},
  keyword      = {simulations,viscosity,attenuation,sinus phantom,sinusitis,acoustic streaming,ultrasound},
  language     = {eng},
  number       = {2},
  pages        = {228--238},
  publisher    = {Elsevier},
  series       = {Ultrasound in Medicine and Biology},
  title        = {Feasibility of measuring acoustic streaming for improved diagnosis of rhinosinusitis},
  url          = {http://dx.doi.org/10.1016/j.ultrasmedbio.2007.06.022},
  volume       = {34},
  year         = {2008},
}