Sure. But not every hospital is located in a big city and has access to every type of specialist all the time. I worked for many years in a well-run hospital where the radiologist came in from the city twice a week only. To read and type reports on tests often done three days before. If I was trying to interpret something equivocal on an X-ray or ultrasound, I would sometimes ask the advice of the tech at the time I saw the film, since I needed to act now and a report three days later would be of limited benefit. I did this at my own risk (techs always disclaim) and was free to ignore their opinion. But the experienced ones nearly always knew what was what. They do not usually receive credit for this, but many are very astute indeed.
When a doctor is always available, techs are discouraged - for good reasons - from giving advice. The technology to send images for remote interpretation has, of course, improved immensely over the last few decades. An experienced (emergency) nurse also has a very good idea of what needs to be done and what might be going on.