Quantification of serial changes in cerebral blood volume and metabolism in patients with recurrent glioblastoma undergoing antiangiogenic therapy
Stadlbauer A, Pichler P, Karl M, Brandner S, Lerch C, Renner B, Heinz G (2015)
Publication Type: Journal article
Publication year: 2015
Journal
Book Volume: 84
Pages Range: 1128-36
Journal Issue: 6
DOI: 10.1016/j.ejrad.2015.02.025
Abstract
To evaluate the usefulness of quantitative advanced magnetic resonance imaging (MRI) methods for assessment of antiangiogenic therapy (AAT) response in recurrent glioblastoma multiforme (GBM).Eighteen patients with recurrent GBM received bevacizumab and 18 patients served as control group. Baseline MRI and two follow-up examinations were acquired every 3-5 months using dynamic susceptibility-weighted contrast (DSC) perfusion MRI and (1)H-MR spectroscopic imaging ((1)H-MRSI). Maps of absolute cerebral blood volume (aCBV) were coregistered with choline (Cho) and N-acetyl-aspartate (NAA) concentrations and compared to usually used relative parameters as well as controls.Perfusion significantly decreased in responding and pseudoresponding GBMs but also in normal appearing brain after AAT onset. Cho and NAA concentrations were superior to Cr-ratios in lesion differentiation and showed a clear gap between responding and pseudoresponding lesions. Responders to AAT exceptionally frequently (6 out of 8 patients) showed remote GBM progression.Quantification of CBV reveals changes in normal brain perfusion due to AAT, which were not described so far. DSC perfusion MRI seems not to be suitable for differentiation between response and pseudoresponse to AAT. However, absolute quantification of brain metabolites may allow for distinction due to a clear gap at 6-9 months after therapy onset.
Authors with CRIS profile
Sebastian Brandner
Department of Neurosurgery
Bertold Renner
Lehrstuhl für Pharmakologie und Toxikologie
Involved external institutions
Austria (AT)How to cite
APA:
Stadlbauer, A., Pichler, P., Karl, M., Brandner, S., Lerch, C., Renner, B., & Heinz, G. (2015). Quantification of serial changes in cerebral blood volume and metabolism in patients with recurrent glioblastoma undergoing antiangiogenic therapy. European Journal of Radiology, 84(6), 1128-36. https://dx.doi.org/10.1016/j.ejrad.2015.02.025
MLA:
Stadlbauer, Andreas, et al. "Quantification of serial changes in cerebral blood volume and metabolism in patients with recurrent glioblastoma undergoing antiangiogenic therapy." European Journal of Radiology 84.6 (2015): 1128-36.
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