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. Author manuscript; available in PMC: 2016 Jul 26.
Published in final edited form as: Physiol Meas. 2011 Jul 15;32(8):1301–1313. doi: 10.1088/0967-3334/32/8/019

Figure 2.

Figure 2

Setup schematic. Sample signal and reference signal are phase-compared, filtered and used to modify the VCO. Compressive load is applied perpendicular to ultrasound propagation.