| http://www.w3.org/ns/prov#value | - Because the diagnostic device 12 is implanted deep within the tissue of the patient, and in particular the heart or adjacent anatomical structures, preferably, the patient attachable device 16 wirelessly communicates with the diagnostic device 12 using acoustic energy (e.g., at a relatively low frequency of 40 KHz), and in particular, by transmitting and receiving acoustic energy through the tissu
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