Search: WFRF:(Sahlstrand Johnson Pernilla) >
Ultrasound Doppler ...
-
Jansson, TomasLund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH
(author)
Ultrasound Doppler for improved diagnosis of disease in the paranasal sinuses
- Article/chapterEnglish2005
Publisher, publication year, extent ...
Numbers
-
LIBRIS-ID:oai:lup.lub.lu.se:e0451775-ff91-4bdb-a202-7211338a8126
-
https://lup.lub.lu.se/record/615625URI
-
https://doi.org/10.1109/ULTSYM.2005.1602980DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:kon swepub-publicationtype
-
Subject category:ref swepub-contenttype
Notes
-
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 (R2=0.94, corrected for the square-law dependence of sound speed variation due to varying glycerol concentration).
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Persson, Hans WLund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)elma-hpe
(author)
-
Holmer, Nils-GunnarLund University,Lunds universitet,Medicinsk teknik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Biomedical Engineering, Lund,Section V,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)medt-ngh
(author)
-
Sahlstrand-Johnson, Pernilla
(author)
-
Jannert, MagnusLund University,Lunds universitet,Laryngoesofagologi, allergi och livskvalitet,Forskargrupper vid Lunds universitet,Laryngoesophagology, Allergy and Life Quality,Lund University Research Groups(Swepub:lu)oron-mja
(author)
-
Avdelningen för Biomedicinsk teknikInstitutionen för biomedicinsk teknik
(creator_code:org_t)
Related titles
-
In:Proceedings - IEEE Ultrasonics Symposium2, s. 839-8411051-01170780393821
Internet link
Find in a library
To the university's database