ABSTRACT
Serial transcranial Doppler ultrasonography [TCD] studies were carried out in 74 patients, who had been operated due to supratentorial brain tumours. Among 74 cases have been 32 gliomas, 21 meningiomas and 21 metastasis. The objective of this study was to assess if cerebral vasospasm develops by TCD after supratentorial brain tumour surgery. Vascular spasm was defined when mean flow velocities[MFV] exceeded 120 cm/s in MCA and 90 cm/s in ACA. In the most publications the MFV of 120 cm/s is accepted as lower limit for vasospasm in MCA[2, 3, 8] and this value is about 70% higher than normal value [40 - 60 cm/s]. The cerebral vasospasm has been stated in 16 cases [22%] - 11 gliomas, 4 meningiomas and metastasis out of 74 patients. The cerebral vasospasm has been more intense in ACA on the operated [lesion] side than in MCA and on the non-operated [opposite] side. Cerebral vasospasm should be taken into account as a cause of postoperative worsening also after brain tumour surgery