Mechanical Characteristics of Glioblastoma and Peritumoral Tumor-free Human Brain Tissue

Overview

Journal Acta Neurochir (Wien)

Specialty Neurosurgery

Date 2024 Feb 23

PMID 38396016

Authors

Jessica Kren

Isabelle Skambath

Patrick Kuppler

Steffen Buschschluter

Nicolas Detrez

Sazgar Burhan

Robert Huber

Ralf Brinkmann

Matteo Mario Bonsanto

Affiliations

Soon will be listed here.

Abstract

Background: The diagnosis of brain tumor is a serious event for the affected patient. Surgical resection is a crucial part in the treatment of brain tumors. However, the distinction between tumor and brain tissue can be difficult, even for experienced neurosurgeons. This is especially true in the case of gliomas. In this project we examined whether the biomechanical parameters elasticity and stress relaxation behavior are suitable as additional differentiation criteria between tumorous (glioblastoma multiforme; glioblastoma, IDH-wildtype; GBM) and non-tumorous, peritumoral tissue.

Methods: Indentation measurements were used to examine non-tumorous human brain tissue and GBM samples for the biomechanical properties of elasticity and stress-relaxation behavior. The results of these measurements were then used in a classification algorithm (Logistic Regression) to distinguish between tumor and non-tumor.

Results: Differences could be found in elasticity spread and relaxation behavior between tumorous and non-tumorous tissue. Classification was successful with a sensitivity/recall of 83% (sd = 12%) and a precision of 85% (sd = 9%) for detecting tumorous tissue.

Conclusion: The findings imply that the data on mechanical characteristics, with particular attention to stress relaxation behavior, can serve as an extra element in differentiating tumorous brain tissue from non-tumorous brain tissue.

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