[Computed tomography perfusion (CTP) imaging in diagnostics of cerebral ischemia].

The routine diagnostic tool of acute ischemic stroke is noncontrast computed tomography (CT). Modern multi-slice CT scanners permit also functional imaging with brain perfusion and CT angiography. Wider adoption of thrombolytic therapy in acute stroke have advanced their application. CTP is fast and widely available. It allows verification of cerebral ischemia, and may potentially assist in determining the extent of the ischemic tissue that still is salvageable with thrombolytic therapy. Major cerebral arteries can also be visualized to detect occlusions or stenosis, which also assists in clinical decision making. Noncontrast CT still remains the mainstay of acute stroke imaging.