| Ultrasound contrast agent microbubbles: Stable and transient subharmonic emissions. | |
| | |
MedLine Citation:
|
PMID: 18189999 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
The paper describes a method able to perform an ultrasonic study of a single UCA bubble immersed in a tank filled with a liquid (water) by means of ultrasonic equipment able to insonify and acquire RF echo signals coming from an isolated bubble with a high frame rate. The work was focused on the study of subharmonic emission from an isolated bubble of SonoVue. In particular, the acoustic pressure threshold for a subharmonic stable emission was evaluated for a subset of 50 microbubbles at 3.3 MHz and at 5 MHz of insonation frequencies. An unexpected second pressure threshold, which caused the standstill of the subharmonic emission, was detected at 3.3 MHz and 5 MHz. A transient subharmonic emission, which is hypothesized as being related to the formation of new free gas bubbles, was detected during the ultrasound-induced destruction of microbubbles. Several sequences of RF echo signals and the related spectra, acquired from a set of 400 isolated microbubbles, is investigated at different acoustic driving pressures and excitation frequencies. Specific bubble behaviors concerning the stable subharmonic emission, the inhibition of subharmonic generation, and the transient subharmonic emission were detected during experimentation and discussed in this paper. |
| | |
Authors:
|
Leonardo Masotti; Elena Biagi; Luca Breschi; Enrico Vannacci |
Related Documents
:
|
11088569 - Pressure patches for membranes: the induced pinch of a grafted polymer. 23136319 - Diuretic of choice in abfm hypertension self-assessment module simulations. 2700689 - Comparison of rotational speeds and torque properties between air-bearing and ball-bear... 20018429 - Nonlinear emission from individual bound microbubbles at high frequencies. 19786279 - Igg adsorption on a new protein a adsorbent based on macroporous hydrophilic polymers i... 18710189 - Co gas sensing by ultrathin tin oxide films grown by atomic layer deposition using tran... 19033779 - Endogenous carbon monoxide production: a rare and detrimental complication of extracorp... 1986139 - Techniques of emergency ventilation: a model to evaluate tidal volume, airway pressure,... 7554119 - Propionyl l-carnitine improvement of hypertrophied heart function is accompanied by an ... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 122 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2007 Nov |
Date Detail:
|
Created Date: 2008-01-14 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 3051 Citation Subset: IM |
Affiliation:
|
Ultrasonic and Non Destructive Testing Lab., Electrons and Telecommunications Dept. via S Marta 3, 50139 Firense, Italy. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Use of 2-D and 3-D visualization and auralization tools to assess the acoustics of unusual shaped sp...
Next Document: Subharmonic generation mechanisms in stable cavitation.