Utilization of dynamic CT perfusion in the study of intracranial meningiomas and their surrounding tissue

Abstract

The values obtained elucidate the fact that perilesional edematous areas are ischemic. By subset analysis, it may be possible to identify those areas with recoverable tissue from non-recoverable tissue.

Advanced Imaging of Intracranial Meningiomas

“…14 The findings are similar to that from MR perfusion, which suggest that the decrease in relative cerebral blood volume may be a consequence of, rather than the cause of, the vasogenic edema, and that ischemic changes may be a secondary facultative phenomenon in the pathogenesis of meningioma-related brain edema. 15 …”

Cerebral hyperaemia after isoflurane anaesthesia for craniotomy of patients with supratentorial brain tumour

“…Our finding corroborates earlier work which reported alterations of cerebral blood perfusion in brain tumour and brain tissue adjacent to it . Brain tumours have higher metabolic rate, thus substantially need higher blood flow compared with normal brain tissue . Some argue it is because tumour might have irritated certain nerve or nucleus, which causes vasodilation and greater CBF .…”

Alterations of cerebral microcirculation in peritumoral edema: feasibility of in vivo sidestream dark-field imaging in intracranial meningiomas

“…Ischemic alterations in the peritumoral brain in meningiomas have been investigated in detail and so has the role of mass effect. 17 , 45 Lehmann et al 18 studied the PTBE in meningiomas with MR perfusion imaging and confirmed an increase in relative maximum signal drop with rising distance from the meningioma, suggesting the role of compression by the mass effect, as demonstrated in our study through the evolution of microcirculatory parameters before and after surgical resection. Tatagiba et al 23 provided a study of 12 intracranial meningiomas using a xenon-enhanced CT scan.…”