Table 6: Ten Examinations in Four Patients (Group 3: No. 2,4,8,11) Matched Unilateral CT/MRI Brain Structural Ischemic or Hemorrhagic Damage Evidence

Patient Exam N20 ratio 1/vMCA ratio CT/MRI N20_amp Vasospasm Symptoms
2 5 0.485 0.877 2 0 1 1
2 6 0.58 0.711 2 1 0 1
2 7 0.478 0.915 2 1 2 1
2 8 0.65 0.756 2 1 0 1
4 20 0.51 0.9 2 1 0 1
8 33 0.482 0.659 2 1 0 1
8 34 0 0.725 2 1 1 1
11 43 0.3 1.15 2 1 0 1
11 44 0.3 0.75 2 1 0 1
11 45 0 0.824 2 1 0 1

CT/MRI: MCA area alterations image 0 = no alterations, 1 = transient and reversible lesions (oedema, hypodensity), 2 = structural damage (ischemia, hematoma), 3 = hydrocephalus. N20 amp : 0 = N20 amplitude > 1,2 µV, 1 = N20 amplitude < 1,2 µV. Vasospasm : 0 = absence, 1 = monolateral, 2 = bilateral. Symptoms : 0 = absence, 1 = presence (arm paresis, hemiparesis, hemiplegia or/and consciousness alterations).