Relative cerebral blood volume measurements of low-grade gliomas predict patient outcome in a multi-institution setting

Gisele B. Caseiras, Sophie Chheang, James Babb, Jeremy H. Rees, Nicole Pecerrelli, Daniel J. Tozer, Christopher Benton, David Zagzag, Glyn Johnson, Adam D. Waldman, H. R. Jäger, Meng Law

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Abstract

BACKGROUND/PURPOSE: The prognostic value of defining subcategories of gliomas is still controversial. This study aims to determine the utility of relative cerebral blood volume (rCBV) in predicting clinical response in patients with low-grade glioma at multiple institutions. MATERIALS AND METHODS: Sixty-nine patients were studied with dynamic susceptibility contrast-enhanced perfusion MRI at two institutions. The pathologic diagnoses of the low-grade gliomas were 34 astrocytomas, 20 oligodendroglioma, 9 oligoastrocytomas, 1 ganglioglioma and 5 with indeterminate histology. Wilcoxon tests were used to compare patients in different response categories with respect to baseline rCBV. Kaplan-Meier curve and log-rank tests were used to predict the association of rCBV with time to progression. RESULTS: At both institutions, patients with an adverse event (progressive disease or death) had a significantly higher baseline rCBV than those without (complete response or stable disease) (p value=0.0138). The odds ratio for detecting an adverse event when using rCBV was 1.87 (95% confidence interval: 1.14-3.08). rCBV was significantly negatively associated with time to progression (p=0.005). The median time to progression among subjects with rCBV>1.75 was 365 days, while there was 95% confidence that the median time to progression was at least 889 days among subjects with rCBV
Original languageEnglish
Pages (from-to)215-220
JournalEuropean Journal of Radiology
Volume73
Issue number2
Early online date6 Feb 2009
DOIs
Publication statusPublished - Feb 2010

Keywords

  • Brain tumours
  • Perfusion
  • rCBV
  • Outcome

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