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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Ultrasound Med Biol. 2014 Jul 9;40(9):2172–2182. doi: 10.1016/j.ultrasmedbio.2014.03.018

Fig. 3. Normalized CRI values for HUVECs at the simulated acoustic pressure at given input voltages (0, 9.48, 12.64, 15.80, and 18.96 Vpp) and duty cycles at the stimulated acoustic pressure of 3.6 MPa.

Fig. 3

(a) CRI values for HUVECs as a function of stimulated acoustic pressures at the indicated input voltages [0 MPa (n=21), 1.8 MPa (input voltage: 9.48 Vpp) (n=21), 2.4 MPa (input voltage: 12.64 Vpp) (n=21), 3.0 MPa (input voltage: 15.80 Vpp) (n=21), and 3.6 MPa (input voltage: 18.96 Vpp) (n=19)] (PRF: 1 kHz and duty cycle: 1 %). CRI values were normalized by the CRI value at 3.6 MPa (b) CRI values for HUVECs as function of duty cycles [0.1 (n=10), 0.25 (n=10), 0.50 (n=10), and 0.75 % (n=8)] [PRF: 1 kHz and simulated acoustic pressure (input voltage: 18.96 Vpp): 3.6 MPa (p-value: 0.25 < 0.05)]. CRI values were normalized by the CRI value at 0.75 %.