Recent positive trials have thrust acute cerebral perfusion imaging into the routine
evaluation of acute ischemic stroke. Updated guidelines state that in patients with anterior …

Background and Purpose—Numerous imaging techniques have been developed and
applied to evaluate brain hemodynamics. Among these are positron emission tomography …

Background and Purpose—Computed tomographic perfusion represents an interesting
physiological imaging modality to select patients for reperfusion therapy in acute ischemic …

Background and Purpose—Different definitions have been proposed to define the ischemic
penumbra from perfusion-CT (PCT) data, based on parameters and thresholds tested only in …

Stroke is a leading cause of mortality and morbidity in the developed world. The goals of an
imaging evaluation for acute stroke are to establish a diagnosis as early as possible and to …

The use of herbs for treating various ailments dates back several centuries. Usually, herbal
medicine has relied on tradition that may or may not be supported by empirical data. The …

Traumatic brain injury (TBI) is a common condition with many potential acute and chronic
neurological consequences. Standard initial radiographic evaluation includes noncontrast …

The purpose of this study was to determine the prognostic accuracy of perfusion computed
tomography (CT), performed at the time of emergency room admission, in acute stroke …

Perfusion computed tomography (CT) is a relatively new technique that allows rapid
qualitative and quantitative evaluation of cerebral perfusion by generating maps of cerebral …

Objective To systematically evaluate the accuracy of noncontrast computed tomography
(NCT), perfusion computed tomography (PCT), and computed tomographic angiography …