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- W2801050032 abstract "To investigate whether pharmacokinetic parameters derived from dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) can be used to evaluate vascular endothelial growth factor (VEGF) expression in brain glioma based on a point-to-point basis. Forty-seven patients with treatment-naïve glioma received preoperative DCE-MRI before stereotactic biopsy. We histologically quantified VEGF from section of stereotactic biopsies, and co-registered biopsy locations with localized measurements of DCE-MRI parameters including volume transfer coefficient (Ktrans), reverse reflux rate constant (Kep), extracellular extravascular volume fraction (Ve) and blood plasma volume (Vp). The correlations between DCE-MRI parameters (Ktrans, Kep, Ve and Vp) and VEGF were determined using Spearman correlation coefficient. P ≤ .05 was considered statistically significant. Seventy-nine biopsy samples were obtained and graded into 45 high-grade gliomas (HGGs) and 34 low-grade gliomas (LGGs). Ktrans showed a significant positive correlation with VEGF expression in HGGs group (ρ = 0.505, P < 0.001) and in combined group (LGGs + HGGs) (ρ = 0.549, P < 0.001), but not in LGGs group (P > 0.05). Kep, Ve or Vp was not correlated with VEGF even though a positive trend showed (P > 0.05). DCE-MRI is a useful, non-invasive imaging technique for quantitative evaluation of VEGF, and its parameter Ktrans other than Kep, Ve or Vp may be used as a surrogate for VEGF expression in brain gliomas." @default.
- W2801050032 created "2018-05-17" @default.
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- W2801050032 date "2019-05-01" @default.
- W2801050032 modified "2023-10-16" @default.
- W2801050032 title "Can dynamic contrast-enhanced MRI evaluate VEGF expression in brain glioma? An MRI-guided stereotactic biopsy study" @default.
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- W2801050032 doi "https://doi.org/10.1016/j.neurad.2018.04.008" @default.
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