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FIG 4. Patient 10: 6-year-old boy with right hemiparesis that resolved over 6 days. In this case, ICA dissection was associated with questionable narrowing of the MCA.
A, Coronal MIP from 3D TOF MR angiography shows small-caliber low signal intensity in the left ICA (arrow), indicating slow flow.
B, Left common carotid angiogram shows dissection of the left cervical carotid artery, which terminates at the level of the ophthalmic artery.
C, Right ICA angiogram shows subtle stenosis or spasm of the left MCA (arrow), which was not perceived at MR angiography. Follow-up angiography was not performed.
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