Figure 8.

Performance measures of the deployable applicator assembly as a function of phased array configuration and reflector geometry, for four array configurations (1.5 MHz, 10 mm OD): (a-c) 8 element × 20 mm length; (d-f) 16 element × 20 mm length; (g-i) 4 element × 10 mm length; (j-l) 8 element × 10 mm length. Performance criteria include column 1) max focal intensity gain, column 2) secondary-to-primary (S:P) peak focal intensity ratio as a measure of beam focusing selectivity, and column 3) axial FWHM of focus as indicator of focal dimensions, all as a function of depth.