References
- BENITA, S., BENOIT, J. P., PUISIEUX, F., and THICE, C., 1984, Characterization of drug-loaded poly(D,L-lactide) microspheres. Journal of Pharmaceutical Science, 73, 1721–1724.
- BJERKNES, K., DYRSTAD, K., SMISTAD, G., and AGERKVIST, I., 1999, Preparation of polymeric microcapsules: formulation studies. Drug Development in Industrial Pharmacy, 8, 847–856.
- BJERKNES, K., SONTUM, P. C., SMISTAD, G., and AGERKVIST, I., 1997, Preparation of polymeric microbubbles: formulation studies and product characterisation. International Journal of Pharmaceutics, 158, 129–136.
- BODMEIER, R., and McGthirrv, J. W., 1987, Polylactic acid microspheres containing quinidine base and quinidine sulphate prepared by the solvent evaporization technique. I. Methods and morphology. Journal of Microencapsulation, 4, 279–288.
- BODMEIER, R., and MCGINITY, J. W., 1988, Solvent selection in the preparation of poly(m.-lactide) microspheres prepared by the solvent evaporation method. International Journal of Pharmaceutics, 43, 179–186.
- DECH, C. D., FEINSTEIN, S. R., and PETERSON, E. M., 1987, Biodistribution of transpulmonary echocardiographic contrast agents. Circulation, 76 (suppl. IV), 506.
- FEINSTEIN, S. B., 1989, New developments in ultrasonic contrast techniques: transpul-monary passage of contrast agents and diagnostic implications. Echocardiography, 6, 27–33.
- JALIL, R., and NIXON, R. J., 1990, Biodegradable poly(lactic acid) and poly(lactide-co-glycolide) microcapsules: problems associated with preparative techniques and release properties. Journal of Microencapsulation, 7, 297–325.
- KONDO, A., 1979, Microcapsule Processing and Technology (New York: Marcel Dekker). LmE, D. R. (ed.), 1991, Handbook of Chemistry and Physics, 72nd edn (Boca Raton, FL: CRC Press).
- MORSE, P. M., and INGARD, K. U., 1968, Theoretical Acoustics (New York: McGraw-Hill), pp. 418–441.
- SCHNEIDER, M., ARDITI, M., BARRAU, M. B., BROCHOT, J., BROILLETT, A., VENTRONE, R., and YAN, F., 1995, A new ultrasonographic contrast agent based on sulfur hexaflouride-filled microcapsules. Investigative Radiology, 30, 451–457.
- SCHNEIDER, M., BUSSAT, P., BARRAU, M. B., BODIN°, F., GOTTI, C., HYBL, E., PELAPRAT, M. L., and YAN, F., 1991, A new ultrasound contrast agent based on biodegradable polymeric microballoons. Investigative Radiology, 26 (suppl), 190–191.
- SINGHAL, S., MOSER, C. C., and WHEATLEY, M. A., 1993, Surfactant-stabilized microbubbles as ultrasound contrast agents: stability study of Span 60 and Tween 80 mixtures using a Langmuir Trough. Langmuir, 9, 2426–2429.
- THIES, C., 1987, Microencapsulation. In Encyclopedia of Polymer Science Engineering, edited by J. L. Kraschwitz (New York: Wiley), vol 9, pp. 724–745.
- THIES, C., 1992, Formation of degradable drug-loaded microparticles by in-liquid drying process. In Microcapsules Nanoport. Med. Pharm., edited by M. Donbrow (Boca Raton, FL: CRC Press), pp. 47–71.
- TICE, T. R., and GILLEY, R. M., 1985, Preparation of injectable controlled-release microcapsules by a solvent-vaporization process. Journal of Controlled Release, 2, 343–352.
- UNGER, E. C., LUND, P. J., SIN, D.K., FRITZ, T. A., FULLER, L., YELLOWHAIR, D., and NEW, T. E., 1992, Nitrogen-filled liposomes as vascular US contrast agent: preliminary evaluation. Radiology, 185, 453–456.
- WHEATLY, M. A., SCHROPE, B., and SIN, P., 1990, Contrast agents for diagnostic ultrasound: development and evaluation of polymer-coated microcapsules. Biomaterials, 11, 713–717.
- ME, F., SHAPIRO, J., and MELTZER, R., 1987, Toxicity of intracoronary micro bubbles in contrast echo. Circulation, 76, (suppl. IV), 505.