Title :
Ultrasound induced deflation: A method to study the behaviour of single bubbles with varying radius
Author :
Guidi, Francesco ; Mori, Riccardo ; Tortoli, Piero ; Vos, Hendrik J. ; De Jong, Nico
Author_Institution :
Electron. & Telecommun. Dept., Univ. di Firenze, Florence
Abstract :
Phospholipids coated microbubbles exposed to ultrasound (US) are known to deflate, with possible impact on the results of diagnostic imaging applications. This paper reports on an acousto-optic study of the behaviour of single microbubbles exposed to pulsed low-pressure excitation sequences over long time intervals, during which the bubbles experience ultrasound-induced deflation. The set-up provides radius and echo information that is combined to show resonance effects, and second harmonic responses as a function of diameter.
Keywords :
acoustic resonance; acousto-optical effects; biomedical ultrasonics; bubbles; acoustic resonance effects; acousto-optic study; diagnostic imaging application; phospholipids coated microbubbles; pulsed low-pressure excitation sequences; second harmonic responses; single bubbles behaviour; ultrasound-induced deflation; Acoustic pulses; Acoustic transducers; Biomedical imaging; Biomedical optical imaging; Focusing; Frequency; Optical receivers; Optical transmitters; Resonance; Ultrasonic imaging; microbubble characterization; microbubble deflation; ultrasound contrast agents;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0410
