Bernice: No, if it is urgent... you get seen and sorted. They weigh up the effect of waiting on the patients health. REAL urgent cases goto the top of the list. Eg... if you have a MRI booked at a certain time and a urgent case comes up, you will wait till they are seen first.

"but you might have to wait months to see a specialist for the final results."

Possibly, but if something URGENT shows up, you'll be called in very quickly. All scans/x-rays here are looked at as soon as they can be, which is usually the same day, plus I know with X-rays the people developing them look at them immeadiately after being developed to check for quality and any obvious urgent discoveries.

But that's the UK.