Ultrasound-induced gas release from contrast agent microbubbles - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control Année : 2005

Ultrasound-induced gas release from contrast agent microbubbles

Résumé

We investigated gas release from two hard-shelled ultrasound contrast agents, by subjecting them to high-MI ultrasound and simultaneously capturing high-speed photographs. At an insonifying frequency of 1.7 MHz, a larger percentage of contrast bubbles is seen to crack than at 0.5 MHz. Most of the released gas bubbles have equilibrium diameters between 1.25 and 1.75 µm. Their disappearance was observed optically. Free gas bubbles have equilibrium diameters smaller than the bubbles from which they have been released. Coalescence may account for the long dissolution times acoustically observed and published in previous studies. After sonic cracking, the cracked bubbles stay acoustically active.
Fichier principal
Vignette du fichier
IEEEcorresp11.pdf (515.73 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03193382 , version 1 (13-04-2021)

Identifiants

Citer

Michiel Postema, Ayache Bouakaz, Michel Versluis, Nico de Jong. Ultrasound-induced gas release from contrast agent microbubbles. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005, 52 (6), pp.1035-1041. ⟨10.1109/TUFFC.2005.1504026⟩. ⟨hal-03193382⟩
54 Consultations
85 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More