TY - GEN
T1 - Surface modes of ultrasound contrast agent microbubbles
AU - Van Der Meer, Sander M.
AU - Dollet, Benjamin
AU - Goertzt, David E.
AU - De Jong, Nico
AU - Versluis, Michel
AU - Lohse, Detlef
PY - 2006/12/1
Y1 - 2006/12/1
N2 - We study non-spherical oscillations (surface modes) of the coated microbubbles used in ultrasound contrast agents. We show that an acoustic pressure of 100 kPa, at a frequency of 1.7 MHz, is sufficient to excite surface modes for radii between 2 and 4 μm. Surface modes develop as a parametric instability. We derive their evolution equation accounting for the effect of the shell viscoelasticity. We identify a critical radius (1 to 3 μm, depending on the mode number) below which no surface mode can occur.
AB - We study non-spherical oscillations (surface modes) of the coated microbubbles used in ultrasound contrast agents. We show that an acoustic pressure of 100 kPa, at a frequency of 1.7 MHz, is sufficient to excite surface modes for radii between 2 and 4 μm. Surface modes develop as a parametric instability. We derive their evolution equation accounting for the effect of the shell viscoelasticity. We identify a critical radius (1 to 3 μm, depending on the mode number) below which no surface mode can occur.
U2 - 10.1109/ULTSYM.2006.41
DO - 10.1109/ULTSYM.2006.41
M3 - Conference contribution
AN - SCOPUS:47249165712
SN - 1424402018
SN - 9781424402014
T3 - Proceedings - IEEE Ultrasonics Symposium
SP - 112
EP - 115
BT - 2006 IEEE International Ultrasonics Symposium, IUS
T2 - 2006 IEEE International Ultrasonics Symposium, IUS
Y2 - 3 October 2006 through 6 October 2006
ER -