The symposium is co-organised by The Ann Conroy Trust, in association with Aesculap Academia.
The Ann Conroy Trust is Registered Charity No: 1165808.
We provide Support, Education and Research for patients living with Chiari Malformation, Syringomyelia and associated conditions.
F33 Posterior fossa volume of Chiari malformation: is it funnel narrowing?
Liu Y, Li H, Jin Y，Liu L.
To study the pathogenesis of Chiari I malformation with volumetric measurements of the posterior fossa.
We compared the posterior fossa volume of 59 patients with Chiari I malformation with a control group from the normal population. The volume was measured on MRI scans with the use of Mimic software.
The ratio of PFB to PFC of each image layer increases from the rostral end to the caudal end in the patient group while it decreases in the control group.
We presume that Chiari I malformation is caused by the narrowing of the lower part of the posterior fossa, i.e. a funnel narrowing. Clinically, it is impractical to improve the ratio with an approach involving focal surgery. Instead of arguing which surgical approach is optimal, we should concentrate on restoring/improving the CSF circulation with surgical techniques. A minimally invasive technique that can improve the CSF circulation should be customized for each patient individually.