Nowosielski, Martha; Recheis, Wolfgang; Goebel, Georg; Güler, Ozgür; Tinkhauser, Gerd; Kostron, Herwig; Schocke, Michael; Gotwald, Thaddaeus; Stockhammer, Günther; Hutterer, Markus (2011). ADC histograms predict response to anti-angiogenic therapy in patients with recurrent high-grade glioma. Neuroradiology, 53(4), pp. 291-302. Springer 10.1007/s00234-010-0808-0
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INTRODUCTION
The purpose of this study is to evaluate apparent diffusion coefficient (ADC) maps to distinguish anti-vascular and anti-tumor effects in the course of anti-angiogenic treatment of recurrent high-grade gliomas (rHGG) as compared to standard magnetic resonance imaging (MRI).
METHODS
This retrospective study analyzed ADC maps from diffusion-weighted MRI in 14 rHGG patients during bevacizumab/irinotecan (B/I) therapy. Applying image segmentation, volumes of contrast-enhanced lesions in T1 sequences and of hyperintense T2 lesions (hT2) were calculated. hT2 were defined as regions of interest (ROI) and registered to corresponding ADC maps (hT2-ADC). Histograms were calculated from hT2-ADC ROIs. Thereafter, histogram asymmetry termed "skewness" was calculated and compared to progression-free survival (PFS) as defined by the Response Assessment Neuro-Oncology (RANO) Working Group criteria.
RESULTS
At 8-12 weeks follow-up, seven (50%) patients showed a partial response, three (21.4%) patients were stable, and four (28.6%) patients progressed according to RANO criteria. hT2-ADC histograms demonstrated statistically significant changes in skewness in relation to PFS at 6 months. Patients with increasing skewness (n = 11) following B/I therapy had significantly shorter PFS than did patients with decreasing or stable skewness values (n = 3, median percentage change in skewness 54% versus -3%, p = 0.04).
CONCLUSION
In rHGG patients, the change in ADC histogram skewness may be predictive for treatment response early in the course of anti-angiogenic therapy and more sensitive than treatment assessment based solely on RANO criteria.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology |
UniBE Contributor: |
Tinkhauser, Gerd |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
0028-3940 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Stefanie Hetzenecker |
Date Deposited: |
19 Jun 2018 11:08 |
Last Modified: |
05 Dec 2022 15:10 |
Publisher DOI: |
10.1007/s00234-010-0808-0 |
PubMed ID: |
21125399 |
BORIS DOI: |
10.7892/boris.110999 |
URI: |
https://boris.unibe.ch/id/eprint/110999 |
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