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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2020 Jan 16;67(9):2628–2637. doi: 10.1109/TBME.2020.2967033

Fig. 6.

Fig. 6.

Comparison of (a) the average time delay and (b) speed of sound in skull bones calculated from hydrophone and resonance method (n = 403). “All4Sk” represents the average time delay and speed of sound for all 4 skulls.