Several in vitro and in vivo studies have been performed to investigate the potential of Photothermal Therapy (PTT) as a cancer treatment strategy. However, there are still open questions concerning the optimal parameters for generating cavitation bubbles and acoustic shockwaves for increasing the damage to malignant cells, and the primary mechanism for cell damage in PTT is still a matter of debate. This study investigates PTT based on shockwaves from cavitation induced far from the cells, due to laser absorption by gold nanorods (GNR) colloidal solutions in vitro. The effects of laser energy and distance from the cavitation on cell viability is investigated in PC3 prostate cancer cells, and Escherichia coli (E. coli) cells, respectively.

© 2017 SPIE

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