Correspondence: Quantitative analysis of ultrasound contrast agent postexcitation collapse
نویسندگان
چکیده
منابع مشابه
Collapse Dynamics of Ultrasound Contrast Agent
Ultrasound contrast agents (UCAs) are micron-sized gas bubbles encapsulated with thin shells on the order of nanometers thick. The damping effects of these viscoelastic coatings are widely known to significantly alter the bubble dynamics for linear and low-amplitude behavior; however, their effects on strongly nonlinear and destruction responses are much less studied. This dissertation examines...
متن کاملDetermination of postexcitation thresholds for single ultrasound contrast agent microbubbles using double passive cavitation detection.
This work presents experimental responses of single ultrasound contrast agents to short, large amplitude pulses, characterized using double passive cavitation detection. In this technique, two matched, focused receive transducers were aligned orthogonally to capture the acoustic response of a microbubble from within the overlapping confocal region. The microbubbles were categorized according to...
متن کاملUltrasound-induced Coalescence of Contrast Agent Microbubbles
ULTRASOUND-INDUCED COALESCENCE OF CONTRAST AGENT MICROBUBBLES M. POSTEMA*1,2, C. T. LANCÉE1, N. DE JONG1,3, P. MARMOTTANT3, and S. HILGENFELDT3, 1Dept. of Experimental Echocardiography, Thoraxcentre, Erasmus MC, 2Interuniversity Cardiology Institute of The Netherlands, 3Physics of Fluids, Dept. of Applied Physics, Faculty of Science and Technology, University of Twente. Corresponding e-mail: po...
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BACKGROUND Ultrasound (US) imaging can be enhanced using gas-filled microbubble contrast agents. Strong echo signals are induced at the tissue-gas interface following microbubble collapse. Applications include assessment of ventricular function and virtual histology. AIM While ultrasound and US contrast agents are widely used, their impact on the physiological response of vascular tissue to v...
متن کاملSubharmonic behavior of phospholipid-coated ultrasound contrast agent microbubbles.
Coated microbubbles, unlike tissue are able to scatter sound subharmonically. Therefore, the subharmonic behavior of coated microbubbles can be used to enhance the contrast in ultrasound contrast imaging. Theoretically, a threshold amplitude of the driving pressure can be calculated above which subharmonic oscillations of microbubbles are initiated. Interestingly, earlier experimental studies o...
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ژورنال
عنوان ژورنال: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
سال: 2014
ISSN: 0885-3010
DOI: 10.1109/tuffc.2014.3023