that I see as part of the organisation..... i am aware at one point Royal Sussex had two radiologists available but 3 machines because they had an acute shortage of them. They don't just operate the machine , they write a report based on their observations of the image and that's what doctors...
Individual policy and processes certainly differ and have an impact on the level of service given but the wider issue is political , its not just funding its about the whole structure and leadership. Its missing and its not helped by a Tory government who see medical health as a potential cash...