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2. Time course of blood velocity changes related to vasospasm in the circle of Willis measured by transcranial Doppler ultrasound;Harders, A.G.; Gilsbach, J.M.,1987
3. Cerebral vasospasm after subarachnoid haemorrhage investigated by means of transcranial Doppler ultrasound;Lindegaard, K.F.; Nornes, H.; Bakke, S.J.; Sorteberg, W.; Nakstad, P.;Acta Neurochir
4. Sensitivity and specificity of transcranial Doppler ultrasonography in the diagnosis of vasospasm following subarachnoid hemorrhage; Neurology;Sloan, M.A.; Haley, E.C.; Kassell, N.F.,1989
5. Cerebral vasospasm evaluated by transcranial ultrasound correlated with clinical grade and CT-visualized subarachnoid hemorrhage;Seiler, R.W.; Grolimund, P.; Aaslid, R.; Huber, P.; Nornes, H.;Jf Neurosurg,1986