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. Author manuscript; available in PMC: 2013 Aug 8.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2013 Jan;60(1):178–186. doi: 10.1109/TUFFC.2013.2548

Fig. 7 — Photograph of prototype for annular-array imaging platform. (a) 8-channel pulse generator based on electronics and eight-layer printed circuit board (PCB), (b) 8-channel digital imaging receiver based on electronics and 10-layer PCB.

Inline graphic — Photograph of prototype for annular-array imaging platform. (a) 8-channel pulse generator based on electronics and eight-layer printed circuit board (PCB), (b) 8-channel digital imaging receiver based on electronics and 10-layer PCB.