The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Hiroshi Abe - One of the best experts on this subject based on the ideXlab platform.

  • posterior circulation hyperperfusion syndrome after superficial temporal Artery Superior Cerebellar Artery bypass for vertebral Artery dissection
    Journal of Stroke & Cerebrovascular Diseases, 2014
    Co-Authors: Kenji Fukuda, Hiroshi Abe, Tetsuya Ueba, Masakazu Okawa, Toshio Higashi, Tooru Inoue
    Abstract:

    A 68-year-old man was diagnosed with infarction of the cerebellum and medulla oblongata caused by vertebral Artery dissection manifesting as severe stenosis with poor collateral flow. He underwent superficial temporal Artery (STA)–Superior Cerebellar Artery (SCA) bypass for the prevention of fatal brain stem infarction. He had consciousness disturbance 2 days postoperatively. Single-photon emission computed tomography revealed hyperperfusion in the posterior circulation. His consciousness improved as hyperperfusion improved. We report the first case of posterior circulation hyperperfusion syndrome after STA–SCA bypass and provide a review of the relevant literature.

  • aggravation of brainstem symptoms caused by a large Superior Cerebellar Artery aneurysm after embolization by guglielmi detachable coils case report
    Neurologia Medico-chirurgica, 1999
    Co-Authors: Satoshi Ushikoshi, Yoichi Kikuchi, Kiyohiro Houkin, Kazuo Miyasaka, Hiroshi Abe
    Abstract:

    An 81-year-old male presented with right oculomotor nerve paresis and left hemiparesis caused by a mass effect of a large Superior Cerebellar Artery aneurysm. Endovascular treatment was performed using Guglielmi detachable coils. The patient subsequently suffered aggravation of the mass effect 3 weeks after the embolization. Bilateral vertebral Artery occlusion was performed, which decreased the cerebral edema surrounding the aneurysm, but his neurological symptoms did not improve. Parent Artery occlusion is recommended as the first choice of treatment for an unclippable large or giant aneurysm causing a mass effect on the brainstem.

  • Distal aneurysms of the Superior Cerebellar Artery and posterior inferior Cerebellar Artery feeding an associated arteriovenous malformation: case report.
    Neurosurgery, 1992
    Co-Authors: Shoji Mabuchi, Hiroyasu Kamiyama, Hiroshi Abe
    Abstract:

    The authors report a case of two distal aneurysms of the Cerebellar arteries, one arising from the vermian branch of the posterior inferior Cerebellar Artery, the other arising from the hemispheric branch of the Superior Cerebellar Artery, and both feeding an associated arteriovenous malformation (AVM). The aneurysm of the distal posterior inferior Cerebellar Artery was considered the source of a Cerebellar hemorrhage because of the location of a hematoma in the Cerebellar vermis. The life-threatening hematoma was evacuated in an emergency operation 6 hours after the acute onset of symptoms. The Cerebellar aneurysms and the AVM were clipped or extirpated successfully after the patient's condition improved. The association of two rare types of aneurysms with an AVM strongly supports the theory that increased hemodynamic stress derived from the AVM plays an important role in aneurysm formation. The authors think that one should operate on the symptomatic lesion first or both the aneurysm and the AVM in the same operative procedure.

Harold P. Adams - One of the best experts on this subject based on the ideXlab platform.

  • Superior Cerebellar Artery Territory Infarction
    Cerebrovascular Diseases, 1991
    Co-Authors: Lynn K. Struck, José Biller, Askiel Bruno, Richard F. Neiman, Christopher M. Loftus, William T. C. Yuh, E. Eugene Marsh, Harold P. Adams
    Abstract:

    We prospectively reviewed the clinical and neuroimaging features of 10 men and 7 women (aged 25-81) with recent Superior Cerebellar Artery territory infarctions. Six patients had Superior Cerebellar a

Izumi Inaba - One of the best experts on this subject based on the ideXlab platform.

  • emergency superficial temporal Artery Superior Cerebellar Artery bypass for the refractory vertebrobasilar insufficiency with partial mastoidectomy
    World Neurosurgery, 2018
    Co-Authors: Makoto Katsuno, Eitaro Ishisaka, Kiyotaka Toyota, Kazutsune Kawasaki, Izumi Inaba
    Abstract:

    Background Although it is well-known that vertebrobasilar insufficiency (VBI) because of atherothrombosis with bilateral vertebral Artery (VA) occlusion is resistant to medical treatment from the acute to subacute stages, the most appropriate treatment for progressive infarction at these stages remains unclear. Here, we described a patient with VBI who underwent emergency superficial temporal Artery–Superior Cerebellar Artery (STA–SCA) bypass under partial mastoidectomy after confirming mismatch between diffusion-weighted imaging (DWI) findings and clinical symptoms. The patient showed a good outcome with this approach. To our knowledge, our surgical strategy has not been previously reported. Case Description The patient was a 71-year-old woman with progressive infarction because of atherothrombosis with bilateral VA occlusions resistant to maximum medical treatment. Emergency STA–SCA bypass under partial mastoidectomy was performed after confirming DWI findings and symptom mismatch. A good outcome was archived, and no additional cerebral infarctions were noted. Conclusions Emergency bypass should be considered as a treatment option for VBI that is resistant to maximal medical treatment after confirming DWI findings and symptom mismatch. Our approach involving partial mastoidectomy provides a wide and shallow operative field for STA–SCA bypass, which allows accurate bypass with good outcomes.

Yoshiharu Sakurai - One of the best experts on this subject based on the ideXlab platform.

  • cerebral blood flow and metabolism following superficial temporal Artery to Superior Cerebellar Artery bypass for vertebrobasilar occlusive disease
    Journal of Neurosurgery, 1992
    Co-Authors: Akira Ogawa, Motonobu Kameyama, Kenji Muraishi, Takashi Yoshimoto, M Ito, Yoshiharu Sakurai
    Abstract:

    ✓ In order to clarify the effectiveness of extracranial-intracranial bypass operations in patients with vertebrobasilar occlusive disease, the authors used positron emission tomography to investigate the cerebral blood flow (CBF) and metabolism of eight patients undergoing superficial temporal Artery (STA)-Superior Cerebellar Artery (SCA) bypass procedures. In the preoperative studies, CBF in the region of the posterior fossa was low and the oxygen extraction fraction (OEF) was high, the so-called “misery perfusion syndrome.” Such changes were evident in both the posterior circulation and the anterior circulation regions. Postoperatively, there was a significant increase in CBF, a significant decrease in the OEF not only in the region of posterior circulation but also over the entire brain, and a disappearance of the uncoupling between CBF and oxygen metabolism. The STA-SCA bypass procedure is effective in improving CBF and metabolism in patients with vertebrobasilar occlusive disease.

Stephan Zierz - One of the best experts on this subject based on the ideXlab platform.

  • decreased outlet angle of the Superior Cerebellar Artery as indicator for dolichoectasia in late onset pompe disease
    Orphanet Journal of Rare Diseases, 2018
    Co-Authors: Ole Hensel, Ilka Schneider, Mathias Wieprecht, Torsten Kraya, Stephan Zierz
    Abstract:

    Lysosomal α-glucosidase deficiency (Pompe disease) not only leads to glycogen accumulation in skeletal muscle, but also in the cerebral arteries. Dolichoectasia of the basilar Artery (BA) has been frequently reported. Therefore progression of BA dolichoectasia in late onset Pompe patients (LOPD) was studied. BA length, diameter and volume, and cerebral lesions were analysed by MRI/TOF-MR angiography or CT/CT angiography in 20 LOPD patients and 40 controls matching in age, sex- and cardiovascular risk factors. The height of BA bifurcation was assessed semi-quantitatively using the Smoker’s criteria and quantitatively by measuring the outlet angle of the Superior Cerebellar Artery (SUCA). Nine patients were followed over 5 years. The height of the BA bifurcation was abnormal in 12/20 (60%) LOPD patients and in 12/40 (30%) matched controls. The SUCA outlet angle was reduced in LOPD patients compared to controls (127 ± 33° vs. 156 ± 32°, p = 0.0024). The diameter, length and volume of the BA were significantly increased in LOPD patients compared to controls. 12/20 (60%) LOPD patients and 27/40 (68%) controls presented white matter lesions. During 5 years 2/9 LOPD patients developed an abnormal height of BA bifurcation according to the Smoker’s criteria and in all patients the SUCA outlet angle decreased (138 ± 34° vs. 128 ± 32°, p = 0.019). One patient with prominent basilar dolichoectasia experienced a thalamic hemorrhage. Pompe disease is associated with BA dilation, elongation and elevated bifurcation height of the BA which might result in cerebrovascular complications. The SUCA outlet angle seems to be useful for monitoring the progression of BA dolichoectasia.

  • Additional file 1: of Decreased outlet angle of the Superior Cerebellar Artery as indicator for dolichoectasia in late onset Pompe disease
    2018
    Co-Authors: Ole Hensel, Ilka Schneider, Mathias Wieprecht, Torsten Kraya, Stephan Zierz
    Abstract:

    Figure S1. A case of very prominent vertebrobasilar dolichoectasia. Vertebrobasilar arteries of a 75 year old female LOPD patient. Basilar Artery shows to be dilated and elongated with massive cranial and posterior shift of the BA bifurcation height (A coronal, B sagittal view). This LOPD patient experienced a left side thalamic hemorrhage. As consequence of massive BA shift the SUCA outlet angle was not reasonable measurable. Abbr. 1 distal part of basilar Artery, 2 bifurcation of basilar Artery, 3 posterior cerebral Artery, 4 Superior Cerebellar Artery, 5 anterior inferior Cerebellar Artery, 6 vertebral Artery. (PDF 150 kb