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Published in: Journal of Neuro-Oncology 1/2020

Open Access 01-01-2020 | Glioblastoma | Clinical Study

Whole brain apparent diffusion coefficient measurements correlate with survival in glioblastoma patients

Authors: Aaron Michael Rulseh, Josef Vymazal

Published in: Journal of Neuro-Oncology | Issue 1/2020

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Abstract

Introduction

Glioblastoma (GBM) is the most common malignant primary brain tumor, and methods to improve the early detection of disease progression and evaluate treatment response are highly desirable. We therefore explored changes in whole-brain apparent diffusion coefficient (ADC) values with respect to survival (progression-free [PFS], overall [OS]) in a cohort of GBM patients followed at regular intervals until disease progression.

Methods

A total of 43 subjects met inclusion criteria and were analyzed retrospectively. Histogram data were extracted from standardized whole-brain ADC maps including skewness, kurtosis, entropy, median, mode, 15th percentile (p15) and 85th percentile (p85) values, and linear regression slopes (metrics versus time) were fitted. Regression slope directionality (positive/negative) was subjected to univariate Cox regression. The final model was determined by aLASSO on metrics above threshold.

Results

Skewness, kurtosis, median, p15 and p85 were all below threshold for both PFS and OS and were analyzed further. Median regression slope directionality best modeled PFS (p = 0.001; HR 3.3; 95% CI 1.6–6.7), while p85 was selected for OS (p = 0.002; HR 0.29; 95% CI 0.13–0.64).

Conclusions

Our data show tantalizing potential in the use of whole-brain ADC measurements in the follow up of GBM patients, specifically serial median ADC values which correlated with PFS, and serial p85 values which correlated with OS. Whole-brain ADC measurements are fast and easy to perform, and free of ROI-placement bias.
Literature
1.
go back to reference Tamimi AF, Juweid M (2017) Epidemiology and outcome of glioblastoma. In: De Vleeschouwer S (ed) Glioblastoma. Codon Publications, Brisbane Tamimi AF, Juweid M (2017) Epidemiology and outcome of glioblastoma. In: De Vleeschouwer S (ed) Glioblastoma. Codon Publications, Brisbane
Metadata
Title
Whole brain apparent diffusion coefficient measurements correlate with survival in glioblastoma patients
Authors
Aaron Michael Rulseh
Josef Vymazal
Publication date
01-01-2020
Publisher
Springer US
Published in
Journal of Neuro-Oncology / Issue 1/2020
Print ISSN: 0167-594X
Electronic ISSN: 1573-7373
DOI
https://doi.org/10.1007/s11060-019-03357-y

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