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Condition: Hemorrhagic Stroke
Procedure: SPECT

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Total 26 results found since Jan 2013.

Which is responsible for aphasia by subcortical lesions? Subcortical lesions or the cortical hypoperfusion?
This study showed that aphasia to be more common in cases with cortical hypoperfusion in the dominant hemisphere than in cases without hypoperfusion. Our results provide evidence that direct effect of the lesion in the basal ganglia on the development of aphasia is doubtful.PMID:35984244 | DOI:10.1080/01616412.2022.2112369
Source: Neurological Research - August 19, 2022 Category: Neurology Authors: Ulufer Celebi Mehmet Fevzi Oztekin Nuriye Ozlem Kucuk Source Type: research

Surgical Management of Failed Revascularization in Moyamoya Vasculopathy
Conclusion: Overall, repeat revascularization is needed only in a small percentage of the cases in MMV. A rescue surgery should be considered in those with neurological symptoms and decreased CVRC. Intermediate-flow bypass using a radial artery graft is a reliable technique for patients requiring repeat revascularization. Based on our institutional experience, we propose an algorithm for guiding the decision process in cases of bypass failure.
Source: Frontiers in Neurology - June 29, 2021 Category: Neurology Source Type: research

Nonconvulsive Status Epilepticus With Neuropsychological Symptoms: Two Case Reports
We report two such cases. Case 1, a 62-year-old man with a history of a subcortical hemorrhage in the right lateral temporal lobe and a brain infarct in the left medial temporo-occipital lobes, suddenly developed left unilateral spatial neglect and visual object agnosia. Diffusion-weighted imaging indicated status epilepticus, not stroke. His deficits resolved immediately after treatment with diazepam and phenytoin sodium. Case 2, a 61-year-old man with a history of brain infarcts in the right lateral temporal and left medial temporo-occipital lobes, suddenly developed global aphasia and cortical deafness. An MRI revealed ...
Source: Cognitive and Behavioral Neurology - December 1, 2020 Category: Neurology Tags: Case Reports Source Type: research

Preoperatively estimated graft flow rate contributes to the improvement of hemodynamics in revascularization for Moyamoya disease
Moyamoya disease is a cerebrovascular disease that is characterized by chronic progressive stenosis of the terminal portion of the internal carotid artery (ICA) on both sides of the brain, which results in an abnormal vascular network of the collateral pathways at the base of the brain.1,2 Therefore, patients with Moyamoya disease have a decreased cerebral blood flow (CBF) and reduced cerebral perfusion pressure,3 which can result in ischemic and/or hemorrhagic stroke. This hemodynamic condition can be evaluated using positron emission tomography (PET) or single-photon emission computed tomography (SPECT) as the gold standard procedure.
Source: Journal of Stroke and Cerebrovascular Diseases - November 7, 2020 Category: Neurology Authors: Tomoyoshi Kuribara, Takeshi Mikami, Katsuya Komatsu, Yusuke Kimura, Sangnyon Kim, Kei Miyata, Yukinori Akiyama, Rei Enatsu, Toru Hirano, Nobuhiro Mikuni Source Type: research

Prediction of Cerebral Hyperperfusion after Superficial Temporal Artery-Middle Cerebral Artery Anastomosis by Three-Dimensional-Time-of-Flight Magnetic Resonance Angiography in Adult Patients with Moyamoya Disease
Conclusion: The signal intensity of the intracranial major arteries, including the ACA, MCA, and PCA, on preoperative 3D-TOF MRA may identify adult MMD patients at higher risk for CHP after direct revascularization surgery.Cerebrovasc Dis
Source: Cerebrovascular Diseases - August 21, 2020 Category: Neurology Source Type: research

A Case of Delayed Intraparenchymal Hemorrhage Due to Hyperperfusion After Flow Diverter Treatment
We present the case of a 54-year-old woman with a partially thrombosed large internal carotid artery aneurysm. She presented intraparenchymal hemorrhage in the right parietal lobe three days after the successful FD treatment. We performed endoscopic hematoma removal, and then her consciousness disturbance was fully recovered. IMP single-photon emission computed tomography showed significant increase of cerebral blood flow in the right hemisphere.
Source: Journal of Stroke and Cerebrovascular Diseases - May 13, 2020 Category: Neurology Authors: Takaaki Itazu, Yukiko Enomoto, Keita Yamauchi, Yusuke Egashira, Toru Iwama Tags: Case Report Source Type: research

Impact of cortical hemodynamic failure on both subsequent hemorrhagic stroke and effect of bypass surgery in hemorrhagic moyamoya disease: a supplementary analysis of the Japan Adult Moyamoya Trial.
CONCLUSIONS: Hemodynamic failure is an independent risk factor for subsequent hemorrhage in hemorrhagic moyamoya disease. Direct bypass surgery showed a significant preventive effect in the hemodynamically impaired hemispheres. Thus, hemodynamic failure, as well as previously proposed factors such as choroidal anastomosis, should be considered for the surgical indication in hemorrhagic moyamoya disease.Clinical trial registration no.: C000000166 (umin.ac.jp). PMID: 32168484 [PubMed - as supplied by publisher]
Source: Journal of Neurosurgery - March 12, 2020 Category: Neurosurgery Authors: Takahashi JC, Funaki T, Houkin K, Kuroda S, Fujimura M, Tomata Y, Miyamoto S Tags: J Neurosurg Source Type: research

Left thalamus infarction in the thalamotuberal artery perfusion area causing subcortical diaschisis and transcortical sensory aphasia
The thalamus is related to language function, and some thalamic stroke cases can cause aphasia [1]. However, most previous cases reporting thalamic damage-induced ipsilateral subcortical diaschisis and aphasia were hemorrhagic stroke [1,2]. Only a few left thalamus infarction cases showed cortical hypoperfusion concerned with the aphasia, but no single-photon emission computed tomography (SPECT) or thalamic nucleus data were available [3]. Thus, aphasia pathology due to cortical hypoperfusion following thalamus infarction, especially with respect to thalamic nuclei, is still unknown.
Source: Journal of the Neurological Sciences - January 24, 2020 Category: Neurology Authors: Kosuke Matsuzono, Kohei Furuya, Azusa Karube, Akie Horikiri, Tadashi Ozawa, Takafumi Mashiko, Haruo Shimazaki, Reiji Koide, Ryota Tanaka, Shigeru Fujimoto Tags: Letter to the Editor Source Type: research

Moyamoya disease with epileptic nystagmus: A case report
We report a case of moyamoya disease with epileptic nystagmus. A 23-year-old woman presented with a headache and transient hemiparesis on her left side. Magnetic resonance imaging showed no ischemic or hemorrhagic stroke lesions. Digital subtraction angiography confirmed stenosis of the terminal portion of the right internal carotid artery and the formation of moyamoya vessels on the right side. 123I-N-isopropyl-iodoamphetamine (123I-IMP) single photon emission computed tomography (SPECT) showed decreased uptake in the right basal ganglia, frontal, and parietal regions. After electroencephalography (EEG) and a hyperventila...
Source: Journal of Clinical Neuroscience - August 20, 2019 Category: Neuroscience Source Type: research

Superficial temporal artery-middle cerebral artery anastomosis patency correlates with cerebrovascular reserve in adult moyamoya syndrome patients.
CONCLUSION: Our data suggest that improvement in cerebral perfusion and CVR depends on flow in the STA-MCA anastomosis in patients with Moyamoya syndrome. Systematic long-term follow-up of anastomosis flow, brain perfusion and CVR improves quantification of the benefit of STA-MCA anastomosis in terms of disease progression. PMID: 31185229 [PubMed - as supplied by publisher]
Source: Neuro-Chirurgie - June 7, 2019 Category: Neurosurgery Authors: Aboukais R, Verbraeken B, Leclerc X, Gautier C, Henon H, Vermandel M, Menovsky T, Lejeune JP Tags: Neurochirurgie Source Type: research

Neurological Involvement in Primary Systemic Vasculitis
Conclusion Neurological involvement is a common complication of PSV (Table 1), and neurologists play an important role in the identification and diagnosis of PSV patients with otherwise unexplained neurological symptoms as their chief complaint. This article summarizes the neurological manifestations of PSV and hopes to improve neuroscientists' understanding of this broad range of diseases. TABLE 1 Table 1. Common CNS and PNS involvements of primary systemic vasculitis. Author Contributions SZ conceived the article and wrote the manuscript. DY and GT reviewed and edited the manuscript. All authors ...
Source: Frontiers in Neurology - April 25, 2019 Category: Neurology Source Type: research

Progressive Cerebral Ischemia and Intracerebral Hemorrhage after Indirect Revascularization for a Patient with Cerebral Proliferative Angiopathy
We previously reported a patient with cerebral proliferative angiopathy (CPA) who showed cerebral ischemia in resting and acetazolamide-stressed N-isopropyl-p-[123I] iodoamphetamine single-photon emission computed tomography (123I-IMP-SPECT). At onset, the patient was treated conservatively. However, during the 2 years following initial onset, his hemiparesis and aphasia had gradually aggravated and his IQ scores were markedly decreased. MRI revealed progressive vascular proliferation and brain atrophy.
Source: Journal of Stroke and Cerebrovascular Diseases - February 6, 2019 Category: Neurology Authors: Tomomi Kimiwada, Toshiaki Hayashi, Misaki Takahashi, Reizo Shirane, Teiji Tominaga Source Type: research

Recurrent Bleeding in Hemorrhagic Moyamoya Disease : Prognostic Implications of the Perfusion Status.
CONCLUSION: Decreased basal perfusion seems to be associated with recurrent bleeding. Revascularization might prevent recurrent stroke in hMMD by rectifying the perfusion abnormality. A larger-sized, controlled study is required to address this issue. PMID: 26962416 [PubMed]
Source: Journal of Korean Neurosurgical Society - March 12, 2016 Category: Neurosurgery Tags: J Korean Neurosurg Soc Source Type: research