Fig. 4From: Effect of applied energy in renal sympathetic denervation with magnetic resonance guided focused ultrasound in a porcine modelKidney medulla norepinephrine ratio (NEratio) as a function of low (<1.2 kWcm2) and high (≥1.2 kWcm2) de-rated acoustic intensity. Error bars indicate one standard deviation. *The difference between groups was found to be significant (p = 0.01)Back to article page