Abstract
Ultrasound contrast agents (UCAs) such as microbubbles can oscillate and vibrate when a sonic energy field is applied, making them several thousand times more reflective than normal body tissues and emitting significantly stronger acoustic signal. Recently, ultrasound molecular imaging, which uses targeted ultrasonic contrast agents with specific molecular markers attached, is proving to be a powerful and convenient modality for molecular imaging. In addition to the advantages of real-time imaging, high spatial resolution, and high sensitivity of UCA detection, ultrasound molecular imaging makes it possible to visualize molecular and genetic alterations of diseased cells and to monitor the genesis and development of certain diseases. Also, UCAs are wonderful tool as gene and drug carriers. They can be easily destroyed by ultrasound exposure, releasing the drugs or genes at the disease site and increasing penetration into the extravascular space through sonoporation. The promise of UCA for its potentials as novel theranostic agents in molecular imaging and therapy has attracted great attentions. In this chapter, we review the new progress of the research on the design, preparation, and biomedical application of UCAs.
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Zheng, H., Zheng, Y., Yan, F., Chen, M., Li, P. (2016). Next-Generation Ultrasonic Theranostic Agents for Molecular Imaging and Therapy: Design, Preparation, and Biomedical Application. In: Dai, Z. (eds) Advances in Nanotheranostics II. Springer Series in Biomaterials Science and Engineering, vol 7. Springer, Singapore. https://doi.org/10.1007/978-981-10-0063-8_5
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