title: Correlation between cerebral blood volume measurements by perfusion-weighted magnetic resonance imaging and two-year progression-free survival in gliomas.
abstract: Our goal was to determine whether relative cerebral blood volume (rCBV) can serve as an adjunct to histopathologic grading in the assessment of gliomas, with the hypothesis that rCBV can predict two-year survival. We evaluated 29 newly diagnosed gliomas (13 WHO grade II, seven grade III, nine grade IV; 17 astrocytomas, 12 oligodendroglial tumors). Dynamic susceptibility-weighted contrast-enhanced perfusion MR images and CBV maps were obtained. rCBVmax measurements (maximum tumor CBV/contralateral normal tissue CBV) and progression-free survival (PFS) were recorded. Receiver operating characteristic curves and Kaplan-Meier survival curves were calculated for rCBVmax and histologic grade. rCBVmax measurements differed between gliomas without (2.38 +/- 1.22) and with progression (5.57 +/- 2.84) over two years. The optimal rCBVmax cut-off value to predict progression was 2.95. rCBVmax < 2.95 was a significant predictor of two-year PFS, almost as accurate as WHO grade II. In the pure astrocytoma subgroup, the optimal rCBVmax cut-off value to predict progression was 2.85. In this group rCBVmax < 2.85 was a significant predictor of two-year PFS, an even better predictor of two-year PFS than WHO grade II. rCBVmax can be used to predict two-year PFS in patients with gliomas, independent of pathologic findings, especially in tumors without oligodendroglial components.
authors.affiliation: Department of Radiology and Radiological Science, Medical University of South Carolina; Charleston, SC, USA - spampin@musc.edu.
authors.forename: M V
authors.initials: MV
authors.lastname: Spampinato
authors.forename: C
authors.initials: C
authors.lastname: Schiarelli
authors.forename: A
authors.initials: A
authors.lastname: Cianfoni
authors.forename: P
authors.initials: P
authors.lastname: Giglio
authors.forename: C T
authors.initials: CT
authors.lastname: Welsh
authors.forename: S
authors.initials: S
authors.lastname: Bisdas
authors.forename: Z
authors.initials: Z
authors.lastname: Rumboldt
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001254:Astrocytoma / Q000098:blood supply / Q000401:mortality / Q000473:pathology*; D001810:Blood Volume; D001932:Brain Neoplasms / Q000098:blood supply / Q000401:mortality / Q000473:pathology*; D002560:Cerebrovascular Circulation; D018450:Disease Progression; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009837:Oligodendroglioma / Q000098:blood supply / Q000401:mortality / Q000473:pathology*; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D055815:Young Adult