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NEUROLOGY 1988;38:1111
© 1988 American Academy of Neurology

CT and hemifacial spasm

Kathleen B. Digre, MD, James J. Corbett, MD, Wendy R.K. Smoker, MD and Shauna McKusker, MD

From the Departments of Neurology (Drs. Digre and Corbett) and Ophthalmology (Drs. Digre, Corbett, and McKusker), University of Iowa, Iowa City, IA; and the Department of Radiology (Dr. Smoker), University of Utah, Salt Lake City, UT.

Forty-six patients with typical hemifacial spasm had CT. Thirty-eight (83%) were abnormal, including two with surgically documented tumors. Thirty-six had a characteristic dolichoectatic vertebrobasilar artery, with the convexity pointing to the side of the spasm in 92% of the scans. This study suggests that CT is a worthwhile procedure in the evaluation of hemifacial spasm and that dolichoectatic vertebrobasilar arteries are very frequently associated with hemifacial spasm.

Address correspondence and reprint requests to Dr. Corbett, Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242.

Received August 20,1987. Accepted for publication in final form December 2,1987.

Dr. Digre was supported by a Heed Ophthalmic Foundation Fellowship (1986–1987). This work was also supported by an unrestricted grant from Research to Prevent Blindness, University of Iowa.




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