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Fig. 4 | Journal of Medical Case Reports

Fig. 4

From: Examination of metal mobilization from a gunshot by scanning acoustic microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and inductively coupled plasma optical emission spectroscopy: a case report

Fig. 4

Principle of scanning acoustic microscopy in acoustic impedance mode. The acoustic waves reflected from the surfaces of water and the tissue are collected by the same transducer and then combined for the calculation of the acoustic impedance of the tissue. S0 is the generated signal by the 80 MHz transducer, Zref is the acoustic impedance of water, Zsub is the polystyrene substrate’s acoustic impedance, Ztarget is tissue’s acoustic impedance

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