| Autor: |
Bloch, Susannah H, Wan, M, Dayton, P A, Ferrara, K W |
| Jazyk: |
angličtina |
| Rok vydání: |
2004 |
| Zdroj: |
Bloch, Susannah H; Wan, M; Dayton, P A; & Ferrara, K W. (2004). Optical observation of lipid-and polymer-shelled ultrasound microbubble contrast agents. Applied Physics Letters, 84(4), 631-633. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/1bd0x386 |
| Popis: |
High-speed optical experiments demonstrate that the behavior of a polymer-shelled microbubble contrast agent in response to an acoustic pulse is qualitatively and quantitatively different from that of a lipid-shelled agent. The lipid-shelled agent expands in response to a two-cycle pulse, and at pressures approaching 1 MPa, both the shell and its contents fragment. The polymer-shelled agent remains largely intact at pressures up to 1.5 MPa and exhibits a different destruction mechanism: the polymer shell does not oscillate significantly in response to ultrasound; instead, a gas bubble is extruded and ejected through a shell defect while the shell appears to remain largely intact. (C) 2004 American Institute of Physics. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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