The main complications of treatment of ischemic stroke is hemorrhagic transformation; large series have demonstrated its presence between 10-15% of strokes treated endovascularly,
this results in a worse prognosis. Sometimes,
it is easy to recognize an intraparenchymal hematoma,
considering the presence of contrast extravasation after intra-arterial recanalization occurs between 30-50% of cases,
it can be a challenge differential diagnosis.
In this situation Dual-energy CT takes an...
Methods and Materials
We performed a retrospective analysis of prospective screened patients admitted to our center over a period of 3 years (2010-2012) showing an acute ischemic stroke treated endovascularly; according to our protocol,
dual-energy CT was performed within the first 12 hours after endovascular treatment to rule out intracerebral bleeding in order to begin the antithrombotic treatment.
We included all dual-energy CT with intracranial hyperdensities. Thirty-nine patients were included (mean age 67,...
The dichotomization of each observer is presented in the Table 3 . The interobserver agreement obtained was excellent between experienced neuroradiologists in both conventional CT and dual-energy CT (k = 0,83 and k =1 respectively). We obtain a poor correlation comparing the readings of conventional TC between the experienced neuroradiologists and the second-year resident; k = 0,41 (NR1 vs R2) and k = 0,31 (NR2 vs R2). However,
we found a good correlation comparing dual-energy CT readings...
Inexperienced observers increase the agreement with experienced neuroradilogists with dual-energy CT comparing to nonenhanced CT in the detection of hemorrhage transformation in acute stroke patients after endovascular treatment. Therefore,
dual-energy CT helps to inexperienced observers to perform a right diagnosis which has an important relevance in the management and outcome of the patients.
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