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letter
. 2016 Jun 9;117(1):131–132. doi: 10.1093/bja/aew157

Fig 1.

Fig 1

Representative sagittal views showing measurement of the calibre of the middle cerebral artery (MCA), vertebral artery (VA), and arteriae basilaris (BA) in an elderly patient and in a patient with subarachnoid haemorrhage on digital subtraction angiography. (a–d) A male patient aged 75 yr suffered from an intracranial aneurysm. After stellate ganglion block (SGB), the calibre of the MCA increased from 3.386 (a) to 3.804 mm (b), the calibre of the VA increased from 3.328 (c) to 3.855 mm (d), and the calibre of the BA increased from 2.891 (c) to 3.121 mm (d). (e–h) A male patient aged 56 yr suffered from an aneurysm of arteriae cerebri media M2 temporal region with subarachnoid haemorrhage. After SGB, the calibre of the MCA increased from 2.589 (e) to 2.809 mm (f), the calibre of the VA increased from 3.476 (g) to 3.921 mm (h), and the calibre of the BA increased from 2.612 (g) to 3.161 mm (h).