Advanced CT Perfusion Analysis in Minutes

The mismatch map also identifies areas of hypodensity, indicating areas that may have already been infarcted. Tissue with a Hounsfield Unit (HU) value of -5 to -12 will be displayed on the mismatch map in blue.

The HU multi-threshold map shows the degree of Hounsfield Unit asymmetry using thresholds that can be user-specified.

The mismatch map provides a comparison between brain regions with substantial reductions in cerebral blood flow (CBF) in pink and regions with significant hypoperfusion in green as reflected by delays in contrast arrival times (Tmax delays).

The mismatch map can also be configured to show if a patient meets imaging criteria for mechanical thrombectomy.

This map shows the severity of the delays in contrast arrival times (Tmax), the volume of tissue with delays, and the Hypoperfusion Intensity Ratio (HIR) which is automatically calculated.

This map offers a co-registered view of the CT scan with the CT perfusion maps. No thresholds are applied and no volumes are calculated on this map. It provides a comparison between CT findings and the perfusion images.

The AIF plot displays the location automatically chosen by the software for the arterial input function (AIF) and the venous output function (VOF). The movement plots document how much patient movement occurred during the scan.

Rapid CTP provides cerebral blood volume (CBV) thresholds which include a CBV index.

Rapid CTP provides CBF thresholds which include a 20% “golden hour” threshold often used for patients who arrive at the hospital within 60 minutes of symptom onset.