I read of a Dutch patient who had CCI and AAI diagnosed by Gilete from a cervical spine MRI. Not the cranio cervical MRI. Is that the one with the rotational view?
I think imaging of the craniocervical junction may be included as part of a cervical spine MRI in some cases, and if it was a severe case perhaps the AAI was visible in neutral, without the rotational views?
You need the rotation scans to see the degree of rotation of the atlas of the axis when you turn your head to the left and right to be able to assess if the instability is pathological. Mine is, and I have a deviation of the odontoid peg, subluxation on one side and dislocation of the atlanto-axial joint on the other, which was not visible in neutral.
Is it possible that the cervical scan included these images, or they had further scans done after a diagnosis of CCI which is diagnosable from neutral upright and flexion/extension?