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Figure 3
SR angiography images showing the intra- and extra-cranial vasculature morphology without (a) and with (b) transecting the external carotid artery (ECA). A T-shaped catheter was introduced to perform SR imaging of the entire cranial vasculature including territories supplied by the ECA. The ECA and its downstream branch EMA were clearly detected when the ECA was still intact (a). After ligating the ECA, a retroverse blood flow from PPA perfused the ECA territory, indicating the possibility of collaterals from the PPA sparing the tissue supplied by the ECA from extra-cranial ischemia (b). ICA: internal carotid artery; EMA: external maxillary artery; PPA: pterygopalatine artery. Scale bar: 1 mm.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 21| Part 6| October 2014| Pages 1314-1318
doi:10.1107/S1600577514016130
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