Perhaps everyone thinks, aren't X-rays, CTs, and MRIs all similar as examinations?
Just moving through a machine, isn't it quite fast?
Actually, this is not the case!
For X-ray patients, there's basically no fuss and results come out very quickly.
But CT and MRI require more preparation time and involve positioning the body, finding the films, and so on... Running back and forth is much more of a bother, and if the patient is in an urgent condition, there's simply not enough time to complete the test before the condition worsens or new issues arise.
At this point, the patient is also in a very dangerous state of arterial dissection, already predisposed due to Kawasaki disease where the blood vessels are on the brink of dissection.
Now that an arterial dissection has formed, the situation could deteriorate at any moment, leading to rupture of the vessel wall.
So now is definitely not the time for examinations!