[shanacarp]

It isn't low volume per say: lots of women get (medically unnecessary) 3d ultrasounds when pregnant to get "a nicer picture" at independent clinics.

A lot of is regulatory, but not completely. - other issues include 1) expensive software integrations for EMR and billing reasons 2) that most machines have multiple wands to attach 3) That billing codes tend to support the use of expensive machines rather than cheap ones if a doctor wants to make money is probably related to billing codes/other non-embedded software