We recognise that a number of institutions have this as a restriction imposed on them. We would argue that if the report is encrypted it does not matter where the data travels but that is a side issue here!
You have a few options.
MediCam allows "Reports" to be sent via email direct from the device. Normal email routing will apply. It depends on your ISP and the location of the email server of both sender and recipient as to whether it will "travel" through another country.
When sending via an endpoint that you have set up, it will again depend on your ISP. Unless using a VPN it is very unlikely that your ISP would route traffic through another country if both the sender and the endpoint are in the same country.
It is possible to set an endpoint up within an network and thereby making the endpoint an internal IP address. That would mean that only users that are also on the internal network can submit reports and would therefore guarantee that not only would data not leave the country, it would not leave the institutions network.