Hi and welcome to the Chiari forum.
Jen is right in that the use of the CINE MRI is up for grabs with many NS's including some that fall under chiari specialist....that said, some r able to tell u have a CSF obstruction via the other MRI's done or bcuz u have a syrinx.
The thoracic and lumbar MRI's should help not only rule out syringomyelia, but tethered cord which could explain ur incontinence.
Do u know, with ur cervical MRI did they say ur brain stem was elongated?
And most NL's and NS's r under the assumption that chiari is not responsible for symptoms....and do not consider it a source.....which this makes it all so frustrating for us to get the proper dx and treatment.
What I would suggest for now, is get copies of all MRI's...so request copies of those already done along with the reports, and when u go in for the next 2 MRI's when u sign in ask for copies right away, u will have the CD b4 u leave and the report is sent approx a week or 2 later.
Ask ur Dr about related conditions like RA, sleep apnea, ehlers-danlos, hashimoto's thyroiditis....in doing so u may find out more about ur disk issues....
.... and do start to research chiari specialists. We do have a list here that u can use to help get started. the list is not meant as a referral. It was compiled by the names of the members drs...but u still need to research them to find the dr that is right for u.
http://www.medhelp.org/health_pages/Neurological%20Disorders/DOCTORS-LIST-FOR-CHIARI-SYRINGOMYELIA/show/1062?cid=186
"selma"