Figure 6From: A 63 element 1.75 dimensional ultrasound phased array for the treatment of benign prostatic hyperplasiaExposimetry results of the normalized intensity for off-axis focusing with the focal point aimed at 0, 0, 40 mm plotted as a (a) mesh or (b) contour with levels indicated at 0, -1, -2, -3, -6 and -9 dB. These results indicate acceptable grating lobes of less than -9 dB.Back to article page