نتایج جستجو برای: ارزیابی چندگانه مرکزیت mca
تعداد نتایج: 145469 فیلتر نتایج به سال:
Primary mucinous cystadenocarcinoma (MCA) of the breast was first described by Koenig and Tavassoli in 1998. To our knowledge, only 9 cases of MCA of the breast have been reported. The optimal treatment of MCA could not be defined yet. This article aims to increase the knowledge about this rare variant of breast cancer and to review the literature.
BACKGROUND AND PURPOSE The use of MR angiography and contrast-enhanced T1-weighted MR imaging in cases of acute cerebral ischemia may be helpful in the evaluation of middle cerebral artery (MCA) occlusion and leptomeningeal collaterals, respectively. The aim of our work was to investigate the relationship between MCA occlusion, T1-weighted vascular contrast enhancement, hemodynamic alterations,...
BACKGROUND AND PURPOSE The National Institutes of Health Stroke Scale (NIHSS) is predictive of thrombus presence but has limited ability to identify occlusion location in the anterior circulation. We describe clinical and sonographic patterns that are associated with tandem internal carotid artery (ICA) and middle cerebral artery (MCA) occlusions. METHODS Consecutive acute ischemic stroke pat...
The capacity of different cytokines to upregulate major histocompatibility complex (MHC) expression on murine tumor cells in vitro, and on s.c. tumors or pulmonary metastases in vivo has been examined. Interleukins-1, -2, and -4 (IL-1, -2, -4), tumor necrosis factor-alpha (TNF-alpha), alpha-interferon (IFN-alpha), and gamma-interferon (IFN-gamma), were incubated with tissue culture lines of mur...
BACKGROUND AND PURPOSE MRI has superior capabilities for the detection of cerebral infarcts compared with CT. CT was used to locate infarcts in most previous studies of atherothrombotic middle cerebral artery (MCA) territory infarcts. Thus, there was a possibility of missing concomitant small infarcts. More accurate identification of topographic lesions in MCA territory with MRI may help to est...
Background and Purpose—The hyperdense appearance of the main middle cerebral artery (HMCA) is now a familiar early warning of large cerebral infarction, brain edema, and poor prognosis. This article describes the hyperdensity associated with embolic occlusion of branches of the middle cerebral artery in the sylvian fissure (MCA “dot” sign). We define it and determine its incidence, diagnostic v...
background: intravenous recombinant tissue plasminogen activator (rt-pa) is an approved treatment for acute ischemic stroke within 4.5 h of symptoms onset. decompressive craniectomy (dc) has been shown as an effective therapeutic modality in malignant middle cerebral artery (mca) infarction. as rt-pa could result in hemorrhagic complication during or after any surgery dc may be ass...
BACKGROUND AND PURPOSE Space-occupying brain edema is a life-threatening complication in patients with large hemispheric stroke. The aim of the study was to determine whether molecular markers of endothelial damage may help to predict secondary brain edema and, secondly, to identify patients who could benefit from aggressive therapies such as decompressive hemicraniectomy or hypothermia. METH...
BACKGROUND Serial changes of flow velocities of transcranial Doppler ultrasound (TCD) in symptomatic middle cerebral artery (MCA) occlusive disease may be related to the occurrence of further vascular events, but prospective data are lacking. METHODS We conducted a prospective study on patients with cerebral ischemia who were hospitalized with symptomatic MCA stenosis or occlusion. We repeate...
PURPOSE Although time-of-flight (TOF)-magnetic resonance angiography (MRA) can clearly depict intracranial arteries, the arterial flow of middle cerebral artery (MCA) is occasionally not detected. We evaluated this phenomenon with reference to cerebrovascular dynamics. MATERIALS AND METHODS Seventeen patients with suspected occlusion of MCA or internal carotid artery on TOF-MRA were enrolled....
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