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. 2021 Sep 21;16:6455–6475. doi: 10.2147/IJN.S325891

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© 2021 Li et al.

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PA imaging and phase transition of NPs in vitro (A) PA images of iRGD-ICG-10-HCPT-PFP-NPs varying with ICG concentration in vitro (B) PA signal values of different concentrations measured by PA apparatus (C) images of NPs before LIFU irradiation (D and E) phase transition of NPs after LIFU irradiation, scale bar: 20 μm. (F) B-mode and enhanced ultrasound images of NPs before LIFU irradiation. (G) B-mode and enhanced ultrasound images of NPs after LIFU irradiation.