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Figure 2: The right middle cerebral artery (MCA) chronic occlusion was mechanically recanalized and stented. (a) A 52-year-old male presented with paroxysmal left limb weakness for half a year with one-week aggravation. CT angiography of the right MCA showed a rat tail-shaped occlusion (white arrow). (b) DSA showed that the right MCA was occluded at the beginning and disordered collateral circulation was found at the occluded site. (c) CT perfusion imaging showed that the right hemisphere was significantly less perfused than the contralateral hemisphere. (d) Neuroform EZ 2.5 mm × 15 mm stent (black arrow) was placed at the occlusion. The stent was found to be well dilated, the remaining stenosis was 15%, and anterograde blood flow was restored to Thrombolysis in Cerebral Infarction grade III. (e) Immediately after the operation, the stent's mark and metal wire were not clear on the Dyna CT scan and reconstruction, and complete expansion of the stent could not be confirmed. (f) After the operation, high-resolution Dyna micro-CT clearly showed the mark and nickel-titanium wire of the stent; the stents had expanded satisfactorily, and the image quality was improved obviously. (g) Six months of review DSA showed smooth blood flow in middle cerebral artery stent. (h) Re-examination of CT perfusion imaging findings showed a significant improvement in right hemisphere perfusion in comparison with preoperative findings

Figure 2: The right middle cerebral artery (MCA) chronic occlusion was mechanically recanalized and stented. (a) A 52-year-old male presented with paroxysmal left limb weakness for half a year with one-week aggravation. CT angiography of the right MCA showed a rat tail-shaped occlusion (white arrow). (b) DSA showed that the right MCA was occluded at the beginning and disordered collateral circulation was found at the occluded site. (c) CT perfusion imaging showed that the right hemisphere was significantly less perfused than the contralateral hemisphere. (d) Neuroform EZ 2.5 mm × 15 mm stent (black arrow) was placed at the occlusion. The stent was found to be well dilated, the remaining stenosis was 15%, and anterograde blood flow was restored to Thrombolysis in Cerebral Infarction grade III. (e) Immediately after the operation, the stent's mark and metal wire were not clear on the Dyna CT scan and reconstruction, and complete expansion of the stent could not be confirmed. (f) After the operation, high-resolution Dyna micro-CT clearly showed the mark and nickel-titanium wire of the stent; the stents had expanded satisfactorily, and the image quality was improved obviously. (g) Six months of review DSA showed smooth blood flow in middle cerebral artery stent. (h) Re-examination of CT perfusion imaging findings showed a significant improvement in right hemisphere perfusion in comparison with preoperative findings