Not completely objecting to this idea, but even in ideal scenarios with high-tech hardware and specialized setup, getting useful US image quality can be non-tri

Not completely objecting to this idea, but even in ideal scenarios with high-tech hardware and specialized setup, getting useful US image quality can be non-trivial and requires training and expertise. I can conceivably see that these are to some extent technical limitations that can be overcome for some level of mass-adoption. However, I don't see what use cases you have in mind that don't require a doctor for interpretation anyway (in which case having a professional device and the required expertise present in the facility is much simpler and cheaper than putting it in the hands of every patient). But also, particularly for pets I believe anything with a non-negligible amount of fur or similar (i.e. anything that is not just bare skin) will be fundamentally impossible to achieve good enough acoustic coupling for. Unless you also sell shaving equipment with it. Anything with bone in the way (e.g. a ribcage with gaps smaller than a human one) is also more or less out. For inanimate objects I really wonder what use cases you have in mind. Acoustic properties (and coupling) are even more of a variable there...