Figure 1

MRI scans and magnetic resonance angiographic findings before and after first injection of human umbilical cord blood (hUCB)-derived mesenchymal stem cells (MSC). (A) Partial recanalization of the basilar artery with residual severe stenosis was shown in the subacute infarction sites of bilateral pons, midbrain and right superior cerebellum. (B) Bilateral hypertropic olivary degeneration and further recanalization of the basilar artery with residual irregular stenosis was shown in the subacute to chronic infarction sites. (C) Luminal irregularity at the mid-to-distal basilar artery with residual stenosis was shown in the chronic infarction sites. (D) No intra-cranial lesion was shown in the chronic infarction sites, and effusion size was decreased at the right mastoid.