Discrepancy Between the Dynamic Computed Tomography and T2* Magnetic Resonance Perfusion Imaging in Brain Tumors

Abstract

In this report, we separately performed dynamic computed tomographic perfusion and dynamic susceptibility contrast-T2 magnetic resonance perfusion imaging on 2 cases of brain tumors (one was a glioblastoma, and the other was a central neurocytoma). Between the 2 methods, we saw the discrepancy in values of cerebral blood volume and cerebral blood flow, differences in location of the maximal cerebral blood volume, and regions with abnormal increased cerebral blood flow besides the solid part of the tumors. Both differences and similarities of the 2 techniques with their advantages and pitfalls were analyzed in detail. The developing trends in the near future were also discussed.

Extraventricular Neurocytoma and Ganglioneurocytoma: Advanced MR Imaging, Histopathological, and Chromosomal Findings

“…There is surprisingly scant literature about perfusion MR imaging in patients with central neurocytoma. We found only two studies, both of which showed moderate elevation of rCBV (2–3) in intraventricular central neurocytomas . We did not find any study assessing the MR perfusion findings of extraventricular neurocytoma, though a recently published CT perfusion study reported low rCBV in a patient with extraventricular neurocytoma .…”

“…We found only two studies, both of which showed moderate elevation of rCBV (2-3) in intraventricular central neurocytomas. 12,13 We did not find any study assessing the MR perfusion findings of extraventricular neurocytoma, though a recently published CT perfusion study reported low rCBV in a patient with extraventricular neurocytoma. 14 We found the 1 p/19 q codeletion in both of our cases accompanied by a very high rCBV.…”