Clinical question: Chiari malformation, syrinx, evaluate for change, yearly follow-up, do CSF flow study. Signs and symptoms: Yearly follow-up. Nonenhanced brain MRI:Negative diffusion weighted images.Redemonstration of Chiari malformation with approximately 12 mm herniation of the tonsils and with flattening deformity of the inferior poles similar to prior exam.There is normal signal intensity of brain parenchyma on all MRI sequences. Unremarkable cerebral cortex, cortical sulci, ventricular system, CSF spaces and brain myelination.Signal void of major intracranial arterial branches are identified.Unremarkable calvarium and soft tissues of the scalp.Unremarkable images through the orbits, paranasal sinuses and mastoid air cells.CSF flow study is of very poor quality due to extensive motion artifact.Patient was also unable to continue and MRI of the spine was not performed. Patient requested to reschedule an return for completion of the study.
1.Nonenhanced brain MRI demonstrate stable Chiari malformation and unremarkable otherwise.2.CSF flow study is of severely degraded due to motion artifact and MRI of spine was not performed due to patient's inability to continue and requested to reschedule the exam for a later date.