Histogram analysis of MR imaging-derived cerebral blood volume maps:combined glioma grading and identification of low-grade oligodendroglial subtypes

AJNR, 2008 Jun 26.BACKGROUND AND PURPOSE: Inclusion of oligodendroglial tumors may confound the utility of MR based glioma grad-ing. Our aim was, first, to assess retrospectively whether a histogram-analysis method of MR perfusion images may both

BACKGROUND AND PURPOSE： Inclusion of oligodendroglial tumors may confound the utility of MR based glioma grading. Our aim was, first, to assess retrospectively whether a histogram-analysis method of MR peifusion images may both grade gliomas and differentiate between low-grade oligodendroglial tumors with or without loss of heterozygosity （LOH） on 1p/19q and, second, to assess retrospectively whether low-grade oligodendroglial subtypes can be identified in a population of patients with high-grade and low-grade astrocytic and oligodendroglial tumors.