Simulation program of specifying Ischemic Stroke Area from CT Perfusion images based on Digital Image Processing Techniques

This research paper presents a new designed program to initially analyze Ischemic Stroke Area from Computed Tomography Perfusion (CTP) based on Digital Image Processing Techniques. The MATLAB program is applied to develop the designed software to analyze the Ischemic Stroke Area. The new designed software can specify Ischemic Stroke Area by assigning Threshold level of CTP from CBV (Cerebral Blood Volume) , CBF (Cerebral Blood Flow) and MTT (Mean Transit Time) images. Our experimental results will be shown in N-Match (normal tissue areas),D-Match (dead tissue areas ), Mismatch (blood cot tissue areas) and Undefined area. Then, separate the brain into left and right to specify Ischemic Stroke Area. As a result of experiment in 5 Stroke patients sample by setting CBV Threshold level to 2.5 ml/100g (±1.5) , CBF Threshold level to 20 ml/100g/min (±10) and MTT Threshold level to 7.5 sec (±4.5) , the distribution of N-Match, D-Match, Mismatch and Undefined depends on their threshold. So, it is possible to sort elementary information of left and right side of the brain to specify Ischemic Stroke Area in order to compare the results with brain specialists.