%0 Journal Article %A P. Macpherson %T Orbit Roentgenology %D 1978 %R 10.1136/jnnp.41.11.1056-c %J Journal of Neurology, Neurosurgery & Psychiatry %P 1056-1056 %V 41 %N 11 %U https://jnnp.bmj.com/content/jnnp/41/11/1056.4.full.pdf