The first line diagnostic is usually CT
scan. They are fast and simple.
MRI has complex sequences and the derived computer generated
image is not anatomically referenced. Anytime accuracy is required, like surgical films or radiation therapy planning, CT is used. Since CT is a real image, everything is rendered anatomically correct.
Most hospitals have 1.5T or 3T MRI. The .7T Open MRIs and 1T units are usually in the imaging centers.