TITLE

Dynamics of acoustic droplet vaporization in gas embolotherapy

AUTHOR(S)
Qamar, Adnan; Wong, Zheng Z.; Fowlkes, J. Brian; Bull, Joseph L.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p143702
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Acoustic droplet vaporization is investigated in a theoretical model. This work is motivated by gas embolotherapy, a developmental cancer treatment involving tumor infarction with gas microbubbles that are selectively formed from liquid droplets. The results indicate that there exists a threshold value for initial droplet size below which the bubble evolution is oscillatory and above which it is smooth and asymptotic, and show that the vaporization process affects the subsequent microbubble expansion. Dampening of the bubble expansion is observed for higher viscosity and surface tension, with effects more pronounced for droplet size less than 6 μm in radius.
ACCESSION #
49071228

 

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