None of those images will show an upper neck injury unless there is a slowing or narrowing/compressing of an artery in the neck.

It is difficult to image the subtle injuries and misalignments of an upper neck injury. Often, it is a treat it as an injury and see if symptoms improve. Upper neck injuries do not have a quick fix. A PT may be able to palpate the cervical vertebra or an upper cervical chiropractor. Then, good neck posture, especially while sleeping and resting is important.