China Medical
Super Reds,
Did My China 1st Class 2 years ago, very thorough, however no MRI Cervical or otherwise. Abdominal ultrasound, and echogram of the cervical region which would show no osteo spinal abnormalities other than potential impingement of cervical vasculature, (arteries).
They will perform EEG, and try to induce, (lightly, no stroboscopic lights), seizure activity.
Also, general exam, previous surgeries, bring reports of recent procedures.
Give it a go, do not reveal any headache symptoms, if they see anything interesting in the cervical region, Let Them Tell You.
Also, no Lasik, Ortho Keratolgic etc., invasive to the eye.
Other than these thorny issues, not too bad, far easier than Japan with the BMI concerns.
Safe Journies...Sushi