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Specialty: Neurology
Procedure: Perfusion

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Total 1377 results found since Jan 2013.

COVID-19 Associated Wake-Up Stroke Treated With DWI/FLAIR Mismatch Guided Intravenous Alteplase: A Case Report
Conclusion: The hyperacute-MRI protocol for wake-up COVID-19 associated strokes might be a safe option.
Source: The Neurologist - November 1, 2021 Category: Neurology Tags: Case Report/Case Series Source Type: research

Regulation of Blood Flow in the Cerebral Posterior Circulation by Parasympathetic Nerve Fibers: Physiological Background and Possible Clinical Implications in Patients With Vertebrobasilar Stroke
Posterior circulation involves the vertebrobasilar arteries, which supply oxygen and glucose to vital human brainstem structures and other areas. This complex circulatory- perfusion system is not homogenous throughout the day; rather, its hemodynamic changes rely on physiological demands, ensuring brainstem perfusion. This dynamic autoregulatory pattern maintains cerebral perfusion during blood pressure changes. Accumulative evidence suggests that activity within the autonomic nervous system is involved in the regulation of cerebral blood flow. Neither the sympathetic nor parasympathetic nervous systems work independently....
Source: Frontiers in Neurology - October 29, 2021 Category: Neurology Source Type: research

Case Report: Preliminary Images From an Electromagnetic Portable Brain Scanner for Diagnosis and Monitoring of Acute Stroke
Conclusion: Due to speed of imaging, size and mobility of the device and negligible environmental risks, development of electromagnetic scanning scanner provides a promising additional modality for mobile and bedside neuroimaging.
Source: Frontiers in Neurology - October 29, 2021 Category: Neurology Source Type: research

Perfusion Defects and Collateral Flow Patterns in Acute Small Subcortical Infarction: a 4D Dynamic MRI Study
AbstractThe hemodynamic changes of acute small subcortical infarction (SSI) are not well understood. We evaluate the hemodynamic changes and collaterals in acute SSI using perfusion magnetic resonance imaging (MRI). A total of 103 patients with acute SSI in penetrating artery territories were recruited and underwent MRI within 24  h of stroke onset. Using 4D dynamic perfusion MRI, they were divided into three patterns: 25 (24%) with normal perfusion, 31 (30%) with compensated perfusion, and 47 (46%) with hypoperfusion. The development of anterograde or retrograde collaterals was also evaluated. Patients with hypoperfusion...
Source: Translational Stroke Research - October 14, 2021 Category: Neurology Source Type: research

Clinical-Diffusion Mismatch Is Associated with Early Neurological Improvement after Late-Window Endovascular Treatment
Conclusion: Patients with both CDM and PDM had a better response to late-window EVT than those with PDM only.Cerebrovasc Dis
Source: Cerebrovascular Diseases - October 12, 2021 Category: Neurology Source Type: research

Atypical Perfusion Manifestation in Migraine with Aura
Migraine with aura may be confused with a stroke. Magnetic resonance imaging is an important tool for the differential diagnosis. Cerebral hypoperfusion has been described in classic migraine, mainly during the aura. A 47-year-old male had an unremarkable past medical history. After sneezing, he developed a left hemi hypoesthesia, bitemporal vision loss, photopsia, and some distortion in the position of letters and words. This lasted #x3c;1 h, and it was followed by a severe headache. A magnetic resonance angiography was performed during the headache. It showed a left hemispheric hypoperfusion that did not correlate with t...
Source: Case Reports in Neurology - October 12, 2021 Category: Neurology Source Type: research

RAPID Software to the Clinical Application Value of Acute Basilar Artery Occlusion with Endovascular Treatment
To investigate the clinical application value of RAPID software based on computed tomography perfusion imaging (CTP) in the endovascular treatment of acute basilar artery occlusion (BAO).
Source: Journal of Stroke and Cerebrovascular Diseases - October 12, 2021 Category: Neurology Authors: Weiling Li, Weijun Hong, En Wang, Yiqing Jiang Source Type: research

Topographic Evolution of Anterior Cerebral Artery Infarction and Its Impact on Motor Impairment
Conclusion: Improvements in the motor outcome seen in ACA stroke may be due to the relative sparing of M1 fiber tracts from infarction. This may occur as a consequence of the posterior location of M1 fiber tracts and the evolving topography of ACA stroke due to the compensatory capacity of leptomeningeal anastomoses.Cerebrovasc Dis
Source: Cerebrovascular Diseases - September 30, 2021 Category: Neurology Source Type: research

The Frequency and Associated Factors of Asymmetrical Prominent Veins: A Predictor of Unfavorable Outcomes in Patients with Acute Ischemic Stroke
CONCLUSION: Our findings suggest that the frequency of APV ≥ 10 mL is high in patients with AIS within 12 hours of symptom onset. History of atrial fibrillation and severe proximal artery stenosis or occlusion are strong predictors of high APV as calculated by SPIN on the SWI map.PMID:34567108 | PMC:PMC8463180 | DOI:10.1155/2021/9733926
Source: Neural Plasticity - September 27, 2021 Category: Neurology Authors: Yue Wang Jingjing Xiao Li Zhao Shaoshi Wang Mingming Wang Yu Luo Huazheng Liang Lingjing Jin Source Type: research

Update of Intravenous Thrombolytic Therapy in Acute Ischemic Stroke
Acta Neurol Taiwan. 2021 Jun 30;30(2):44-53.ABSTRACTUpon acute ischemic stroke, rapid recanalization of the occluded cerebral vessel via intravenous thrombolytic therapy (IVT) is crucial to achieve good functional outcome. The time window of IVT with recombinant tissue plasminogen activator (rt-PA) has been extended from post-stroke 3 to 4.5 hours. In patients with cerebral penumbra identified using cerebral perfusion imaging, IVT is still beneficial within 4.5 to 9 hours after onset of stroke. For those without clear stroke onset time, DWI-FLAIR mismatch by brain MRI indicates hyperacute infarct and IVT is indicative. For...
Source: Acta Neurologica Taiwanica - September 22, 2021 Category: Neurology Authors: Li-Kai Tsai Jiann-Shing Jeng Source Type: research