Current advances in CT imaging of stroke

摘要: Stroke is the second most common cause of death in people over age 60. Imaging plays a pivotal role not only stroke detection, but also predicting infarct extent, hemorrhagic risk, tissue fate and clinical outcome. Noncontrast CT remains modality choice for investigation acute stroke, with use Alberta Program Early Score, angiography source images perfusion significantly improving sensitivity. Hemorrhagic conversion risk may be predicted using permeability surface area product maps. The angiographic spot sign postcontrast leakage visible on contrast can predict hematoma expansion primary intracerebral hemorrhage. Clot burden collateral blood-supply assessment help identify patients who benefit from more aggressive thrombolytic techniques. Physiological imaging ischemic penumbra selected that would thrombolysis beyond current 4.5 h treatment window.