Isles of Scilly's new patient diagnosis system
Patients on the Isles of Scilly will no longer have to travel to the mainland to be diagnosed for medical conditions including suspected heart attacks.
The Near Patient Testing System should help doctors decide whether patients need to be transferred to hospital in Cornwall.
It has been ordered by NHS Kernow, the new clinical commissioning group for Cornwall and the Isles of Scilly.
The system should be in place from "late autumn".
Dr Francis Old, a member of NHS Kernow's governing body, said: "We are committed to providing innovative solutions to patients' health needs, wherever they live, to ensure they receive convenient, safe care closer to home.
"This is particularly important for people living in remote areas such as the Isles of Scilly, where we want to reduce the number of unnecessary journeys patients have to make to the mainland for their care."
Doctors on the Isles of Scilly will be able to test for urgent conditions, for example a fractured hip.
They will also be able to do blood tests for conditions like kidney diseases and blood clots, without needing to send samples to the mainland.
Dr Old said: "While some patients will need to be treated in Cornwall for urgent care, patients will be able to choose if they wish to be treated for some less urgent conditions on St Mary's."
Doctors, nurses and paramedics will also be trained how to use the X-ray machine at the islands' St Mary's Hospital.
The images will be analysed by the radiology team at the Royal Cornwall Hospital, near Truro.