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Ultrasound Doppler for improved diagnosis of disease in the paranasal sinuses

Jansson, Tomas LU ; Persson, Hans W LU ; Holmer, Nils-Gunnar LU ; Sahlstrand-Johnson, Pernilla and Jannert, Magnus LU (2005) IEEE Ultrasonics Symposium, 2005 In Proceedings - IEEE Ultrasonics Symposium 2. p.839-841
Abstract
We propose a method to improve the diagnosis of infection in the paranasal sinuses, distinguishing between mucous and serous cases. The method utilizes a previously published method whereby the viscosity in a sealed container may be measured using an ultrasound Doppler method. As ultrasound propagates in a liquid medium, due to attenuation, the resulting pressure gradient will cause the liquid to move in the propagation direction - the wellknown effect of acoustic streaming. The streaming velocity will, for a given acoustic output, be proportional to the viscosity of the fluid. In this study, we verify that acoustic streaming can be induced in an anthropomorphic sinus phantom cast from a human cranium. The sinus phantom was made from agar... (More)
We propose a method to improve the diagnosis of infection in the paranasal sinuses, distinguishing between mucous and serous cases. The method utilizes a previously published method whereby the viscosity in a sealed container may be measured using an ultrasound Doppler method. As ultrasound propagates in a liquid medium, due to attenuation, the resulting pressure gradient will cause the liquid to move in the propagation direction - the wellknown effect of acoustic streaming. The streaming velocity will, for a given acoustic output, be proportional to the viscosity of the fluid. In this study, we verify that acoustic streaming can be induced in an anthropomorphic sinus phantom cast from a human cranium. The sinus phantom was made from agar with added graphite providing sound attenuation prior to the sinus cavity corresponding to an in vivo situation. A number of water-glycerol solutions with scattering particles, were prepared to mimic a clinically interesting range of viscosities (7-47 mPas). Using a 4.2 MHz continuous wave Doppler probe, clearly detectable mean Doppler shifts in the range of 6.5 to 20 Hz were recorded A linear relationship was found between the Doppler shifts and 1/viscosity (R<sup>2</sup>=0.94, corrected for the square-law dependence of sound speed variation due to varying glycerol concentration). (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Continuous-wave Doppler, Doppler probe, Sinus cavity
in
Proceedings - IEEE Ultrasonics Symposium
volume
2
pages
839 - 841
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Ultrasonics Symposium, 2005
external identifiers
  • wos:000236090701030
  • scopus:33847093353
ISSN
1051-0117
ISBN
0780393821
DOI
10.1109/ULTSYM.2005.1602980
language
English
LU publication?
yes
id
e0451775-ff91-4bdb-a202-7211338a8126 (old id 615625)
date added to LUP
2007-11-25 12:24:19
date last changed
2017-01-01 07:25:10
@inproceedings{e0451775-ff91-4bdb-a202-7211338a8126,
  abstract     = {We propose a method to improve the diagnosis of infection in the paranasal sinuses, distinguishing between mucous and serous cases. The method utilizes a previously published method whereby the viscosity in a sealed container may be measured using an ultrasound Doppler method. As ultrasound propagates in a liquid medium, due to attenuation, the resulting pressure gradient will cause the liquid to move in the propagation direction - the wellknown effect of acoustic streaming. The streaming velocity will, for a given acoustic output, be proportional to the viscosity of the fluid. In this study, we verify that acoustic streaming can be induced in an anthropomorphic sinus phantom cast from a human cranium. The sinus phantom was made from agar with added graphite providing sound attenuation prior to the sinus cavity corresponding to an in vivo situation. A number of water-glycerol solutions with scattering particles, were prepared to mimic a clinically interesting range of viscosities (7-47 mPas). Using a 4.2 MHz continuous wave Doppler probe, clearly detectable mean Doppler shifts in the range of 6.5 to 20 Hz were recorded A linear relationship was found between the Doppler shifts and 1/viscosity (R&lt;sup&gt;2&lt;/sup&gt;=0.94, corrected for the square-law dependence of sound speed variation due to varying glycerol concentration).},
  author       = {Jansson, Tomas and Persson, Hans W and Holmer, Nils-Gunnar and Sahlstrand-Johnson, Pernilla and Jannert, Magnus},
  booktitle    = {Proceedings - IEEE Ultrasonics Symposium},
  isbn         = {0780393821},
  issn         = {1051-0117},
  keyword      = {Continuous-wave Doppler,Doppler probe,Sinus cavity},
  language     = {eng},
  pages        = {839--841},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Ultrasound Doppler for improved diagnosis of disease in the paranasal sinuses},
  url          = {http://dx.doi.org/10.1109/ULTSYM.2005.1602980},
  volume       = {2},
  year         = {2005},
}