期刊
TRANSLATIONAL STROKE RESEARCH
卷 3, 期 2, 页码 205-220出版社
SPRINGER
DOI: 10.1007/s12975-012-0178-5
关键词
Computed tomography perfusion; Acute stroke; Cerebral blood flow; Cerebral blood volume; Permeability surface area product; Hemorrhagic transformation; Primary hemorrhage
The inclusion of dynamic contrast-enhanced computed tomography (CT) or CT perfusion (CTP) scan into the imaging workup for acute stroke patients is widespread. Along with vessel occlusion status from CT angiography, CTP provides pathophysiological information a non-contrast CT cannot provide during the hyperacute stages of cerebral ischemia. Measurement of parenchymal perfusion at the capillary level can be used to characterize tissue viability, a target for thrombolysis. Further, CTP is useful for the detection of blood brain barrier disturbances with the permeability surface area product parameter (PS). Although new to stroke imaging, PS has diagnostic and prognostic implications for primary hemorrhage and secondary hemorrhagic transformation of ischemic stroke. The purpose of this article is to provide an overview of the CTP imaging concepts and their uses for imaging in stroke.
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