Diffusion-weighted imaging in acute stroke.

[Diffusion-weighted imaging in acute stroke]. Radiologe. 2015 Sep 2; Authors: Yilmaz U Abstract Diffusion-weighted imaging (DWI) enables the early detection of acute ischemic stroke and with high sensitivity and specificity. The signal changes are based on decreased diffusion of water molecules that is caused by cytotoxic edema. Despite the possibility of early detection of ischemic changes magnetic resonance imaging (MRI) is not normally necessary for the therapy decision; however, under some conditions, such as unknown time from onset of symptoms, multiparametric MRI including DWI can provide useful information that will influence the therapy. PMID: 26330213 [PubMed - as supplied by publisher]
Source: Der Radiologe - Category: Radiology Authors: Tags: Radiologe Source Type: research

Related Links:

ConclusionsAcupuncture at one side could stimulate bilateral regions. CAT could evoke the gyrus which was possibly related to motor recovery from stroke. A promising indicator of neurobiological deficiencies could be represented by ReHo values in post-stroke patients.
Source: Chinese Journal of Integrative Medicine - Category: Internal Medicine Source Type: research
CONCLUSIONS: The presence of MRI-positive vulnerable carotid plaques including IPH, LRNC, and TRFC is positively associated with symptomatic clinical presentation. Therefore, carotid plaque MRI might be a useful risk stratification tool in determining the risk of ischemic stroke. PMID: 31738030 [PubMed - as supplied by publisher]
Source: Journal of Neurosurgical Sciences - Category: Neurosurgery Tags: J Neurosurg Sci Source Type: research
AbstractThe Alberta Stroke Program Early Computed Tomography Score (ASPECTS) is widely used for the assessment of early ischemic changes (EICs) before thrombolysis. However, for symptomatic intracerebral hemorrhage (sICH) following intravenous recombinant tissue plasminogen activator (rt-PA), the prediction abilities of CT-ASPECTS, diffusion-weighted imaging (DWI)-ASPECTS, and DWI-ASPECTS including EICs in deep white matter (DWI-ASPECTS  + W) are unclear. We investigated associations between each score and sICH following intravenous rt-PA. Data from consecutive patients who received intravenous rt-PA for acut...
Source: Journal of Thrombosis and Thrombolysis - Category: Hematology Source Type: research
Temporary middle cerebral artery occlusion (MCAO) in sheep allows modeling of acute large vessel occlusion stroke and subsequent vessel recanalization. However, rapid and precise imaging-based assessment of vessel occlusion and the resulting perfusion deficit during MCAO still represents an experimental challenge. Here, we tested feasibility and suitability of a strategy for MCAO verification and perfusion deficit assessment. We also compared the extent of the initial perfusion deficit and subsequent lesion size for different MCAO durations. The rete mirabile prevents reliable vascular imaging investigation of middle cereb...
Source: Frontiers in Neurology - Category: Neurology Source Type: research
Authors: Yoshida K, Miyamoto S, SMART-K Study Group Abstract With recent advances in medical treatments for carotid artery stenosis (CS), indications for carotid surgery should be more carefully considered for asymptomatic CS (ACS). Accurate stratification of ACS should be based on the risk of cerebral infarction, and subgroups of patients more likely to benefit from surgical treatment should be differentiated. Magnetic resonance imaging (MRI) offers a non-invasive, accurate modality for characterizing carotid plaque. Intraplaque hemorrhage (IPH) seems the most promising feature of vulnerable plaque detectable by M...
Source: Neurologia Medico-Chirurgica - Category: Neurosurgery Tags: Neurol Med Chir (Tokyo) Source Type: research
ConclusionThe occurrence and severity of CCD are related to the degree of low supratentorial perfusion and the decrease in the ADC value of infarct focus.
Source: Japanese Journal of Radiology - Category: Radiology Source Type: research
AbstractObjectivePosterior circulation ischemic stroke (PCiS) constitutes 20 –30% of ischemic stroke cases. Detailed information about differences between PCiS and anterior circulation ischemic stroke (ACiS) remains scarce. Such information might guide clinical decision making and prevention strategies. We studied risk factors and ischemic stroke subtypes in PCiS vs. ACiS and lesion location on magnetic resonance imaging (MRI) in PCiS.MethodsOut of 3,301 MRIs from 12 sites in the National Institute of Neurological Disorders and Stroke (NINDS) Stroke Genetics Network (SiGN), we included 2,381 cases with acute DWI lesi...
Source: Journal of Neurology - Category: Neurology Source Type: research
ConclusionsAttention should be paid to ischemic stroke recurrence as a complication of IV t-PA, and preparation for mechanical thrombectomy is warranted. Further study of the left atrial appendage is needed to clarify the mechanisms of onset.
Source: Interdisciplinary Neurosurgery - Category: Neurosurgery Source Type: research
AbstractBackground and purposeThe significance of white matter hyperintensities (WMHs) in the setting of mechanical thrombectomy (MT) remains poorly documented. We assessed whether pre-existing WMHs burden was associated with baseline clinical and imaging factors and neurological outcome in patients undergoing MT.MethodsThis retrospective single-center study included consecutive acute ischemic stroke (AIS) patients with stroke due to large vessel occlusion treated with MT. WMHs were assessed on baseline T2 fluid-attenuated inversion recovery magnetic resonance imaging. Neurological outcome was assessed at day 90 by the mod...
Source: Journal of Neurology - Category: Neurology Source Type: research
Abstract Adipose-derived stromal cell (ASC) therapy is currently investigated as a new treatment option for patients with ischemic heart disease (IHD). The aim of this study was to evaluate the effect of ASC therapy in patients with chronic IHD measuring myocardial perfusion and cardiac function using cardiac magnetic resonance imaging (CMRI). Patients were included in MyStromalCell trial, a phase II, randomized, double-blinded, placebo-controlled study investigated the effect of ASCs in patients with chronic IHD with preserved left ventricular ejection fraction (LVEF). In total, 41 of 60 patients underwent cine, ...
Source: Cell Transplantation - Category: Cytology Authors: Tags: Cell Transplant Source Type: research
More News: Ischemic Stroke | MRI Scan | Radiology | Stroke