Most will do a CINE MRI this is to check if u have a CSF obstruction and overcrowding...
and a MRI of the cervical spine, thoracic
and lumbar spine this is to rule out a syrinx,
and possible tethered cord, and ne disk issues.....they will do other testing as well to check for conditions with similar symptoms like lupus, MS, and lymes. Hashimotos thyroiditis, etc....
Chiari is a life altering condition...and u can live a "normal" life with some parameters...