Acoustic Cavitation Enhances Focused Ultrasound Ablation with Phase-Shift Inorganic Perfluorohexane Nanoemulsions: An In Vitro Study Using a Clinical Device

Figure 7

Representative images of Fourier spectra of the radiofrequency signals (a) and typical time evolutions of inertial cavitation activity as a function of time for PCD signals (b) at the HIFU focus during exposures at the DC of 2%, 5%, 10%, and 100% in the MSNC-PFH phantom.

(a) Fourier spectrum of radiofrequency signals

(b) Inertial cavitation signals