نتایج جستجو برای: embolic
تعداد نتایج: 5484 فیلتر نتایج به سال:
It is crucial to understand the distribution of embolic agents inside target liver during and after the hepatic portal vein embolization (PVE) procedure. For a long time, the problem has not been well solved due to the radiolucency of embolic agents and the resolution limitation of conventional radiography. In this study, we first reported use of fluorescent carboxyl microspheres (FCM) as radio...
Introduction: Hypothermia has neuroprotective effects in permanent or transient models of cerebral artery occlusion. In the current study, neuroprotective effect of general hypothermia in the embolic model of stroke, in which no study has been conducted to date. Methods: In this experimental study, twenty-four male Wistar rats (250 to 350 g) were divided into three groups as following: sha...
BACKGROUND AND PURPOSE The detection of asymptomatic embolization with the use of Doppler ultrasound has a number of potential applications in patients with acute stroke. It may provide information on the stroke pathogenesis in individual cases, identify patients with continued embolization, and allow localization of the active embolic source. METHODS We recruited 119 patients with acute ante...
A comparison of four methods for distinguishing Doppler signals from gaseous and particulate emboli.
BACKGROUND AND PURPOSE Many reports in the medical literature have proposed methods of differentiating between gaseous and particulate emboli detected with the use of transcranial Doppler ultrasound. The purpose of this study was to compare the previously published methods with our own sample volume length (SVL) parameter to assess the accuracy of each method in classifying emboli. METHODS A ...
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In contrast to designing nanophotonic devices by tuning a handful of device parameters, we have developed a computational method which utilizes the full parameter space to design linear nanophotonic devices. We show that our method may indeed be capable of designing any linear nanophotonic device by demonstrating designed structures which are fully three-dimensional and multi-modal, exhibit nov...
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