No abstract available.
Infarction* ; Middle Cerebral Artery*

The microsurgical anatomy of the middle cerebral artery(MCA) was reviewed. Embryology, segments, major branches, perforating branches, anomalies of the MCA and the anatomy of the Sylvian fissure were summarized.
Embryology ; Middle Cerebral Artery*

No abstract available.
Aneurysm* ; Middle Cerebral Artery*

No abstract available.
Aneurysm* ; Middle Cerebral Artery*

No abstract available.
Middle Cerebral Artery*

No abstract available.
Granuloma* ; Middle Cerebral Artery*

Objective: To assess fluid-attenuated inversion recovery (FLAIR) vascular hyper-intensity (FVH) and explore its relationship with CT perfusion (CTP) penumbral/infarct core mismatch ratio and diffusion weighted imaging (DWI) final infarct volume in acute ischemic stroke (AIS) patients with middle cerebral artery occlusion (MCAO). Methods: The CTP and MRI images of 38 AIS patients with MCAO were reviewed. The FVH score (longitudinal direction) [FVH score (L)] and FVH score (transverse direction) [FVH score (T)] were quantified on the FLAIR images. The FVH score (L) (range, 0-16) was based on a rostrocaudal extension of FVH and the FVH score (T) (range, 0-3) was based on FVH supply of the occluded MCA territory. The mismatch ratio was calculated from the ratio of the [mean transit time - cerebral blood volume (CBV)] lesion/CBV lesion on the CTP images. The DWI infarct volume was measured on the DWI images. Results: The mismatch ratio was larger for the group of FVH score (L)=7~8 than those of FVH score (L)=5~6 and FVH score (L)=3~4 (p=0.03), whereas the DWI infarct volume was smaller (p=0.04). Similarly, the mismatch ratio of FVH score (T)=2~3 group was larger than FVH score (T)=1 group (p=0.01), whereas the DWI infarct volume was smaller (p=0.02). Both FVH score (L) and FVH score (T) correlated positively with mismatch ratio (P=0.02, P=0.001, respectively), but negatively with DWI infarct volume (P=0.03, P=0.004, respectively). Conclusions: Higher FVH score is associated with larger mismatch ratio and smaller DWI infarct volume in AIS patients with MCAO. FLAIR vascular hyperintensity may represent collateral arterial circulation, and may play a role in protecting the ischemic penumbra.
Infarction, Middle Cerebral Artery

No abstract available.
Atherosclerosis ; Cerebral Angiography ; Infarction, Middle Cerebral Artery

Aneurysms arising from the peripheral distribution of the cerebral arteries are very rare, and those aneurysms are mostly mycotic in origin. We have experienced a rare case of non-mycotic, peripheral aneurysm of the middle cerebral artery. A clinical description of our case as well as a review of the literature about possible etiologies contributing to the peripheral aneurysmal formation is presented.
Aneurysm* ; Cerebral Arteries ; Middle Cerebral Artery

Early spontaneous recanalization of the middle cerebral artery in acute ischemic phase artery is not uncommon, whereas the late spontaneous recanalization of chronic occluded artery is a very rare phenomenon and exact incidence and the timing of this event have not been quantified. We present a case in which late spontaneous recanalization of long-lasting middle cerebral artery occlusion occurred in the absence of surgical, endovascular and thrombolytic treatments.
Angiography ; Arteries ; Incidence ; Infarction, Middle Cerebral Artery ; Middle Cerebral Artery