Back to Search
Start Over
An exposimetry system using tissue-mimicking liquid.
- Source :
-
Ultrasound in medicine & biology [Ultrasound Med Biol] 2008 Jan; Vol. 34 (1), pp. 123-36. Date of Electronic Publication: 2007 Aug 27. - Publication Year :
- 2008
-
Abstract
- Acoustic output measurements of diagnostic ultrasound scanners are currently performed in water and derated to approximate in situ values. The derating scheme ignores nonlinear propagation of sound waves and has been shown in previous numerical and experimental studies to tend to underestimate relevant pressure and intensity values in tissue mimicking media. This work describes an alternative method, which uses a tissue-mimicking liquid with attenuation coefficient slope of 0.3 dB/cm/MHz, speed of sound of 1,540 m/s and nonlinearity parameter B/A of 7.5. The acoustic properties of this liquid are stable for at least 2 y after production. Initial results using a single M-mode configuration are presented. These results confirm that derating can significantly underestimate the pulse intensity integral and peak rarefactional pressure.
Details
- Language :
- English
- ISSN :
- 0301-5629
- Volume :
- 34
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Ultrasound in medicine & biology
- Publication Type :
- Academic Journal
- Accession number :
- 17720296
- Full Text :
- https://doi.org/10.1016/j.ultrasmedbio.2007.06.023