Archive of Upright Multi-Position MRI Cases
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Case#: 5       Chiari Malformation Visualization When Upright
Chiari Malformation Visualization When Upright
The recumbent scan is from a patient with neck pain (being treated conservatively) who developed transient parasthesia and drop attacks. The upright scan revealed a slight disc protrusion at C5-6 but a much more significant position-related downward herniation of the cerebellar tonsils and brainstem compression against the odontoid process that was not visible when the patient was in the recumbent position. The correct surgical approach to this patient , a posterior fossa decompression, could be decided only after the UPRIGHT® MRI successfully visualized the Chiari malformation that accounted for the patient's "drop-attacks".


Case courtesy of J.P. Elsig, M.D., fmri Zentrum, Zurich, Switzerland
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