Multi-Scale, Multi-Resolution Brain Cancer Modeling

TL;DR

This paper introduces a novel multi-scale, multi-resolution agent-based model for glioma that dynamically allocates computational resources to improve efficiency while maintaining predictive accuracy.

Contribution

The study presents a new multi-scale, multi-resolution modeling approach for brain cancer that optimizes computational resources based on tumor heterogeneity and dynamics.

Findings

Four multi-resolution algorithms developed and ranked by efficiency and accuracy.

Combining top two algorithms enhances simulation performance.

The model effectively balances computational cost with predictive power.

Abstract

In advancing discrete-based computational cancer models towards clinical applications, one faces the dilemma of how to deal with an ever growing amount of biomedical data that ought to be incorporated eventually in one form or another. Model scalability becomes of paramount interest. In an effort to start addressing this critical issue, here, we present a novel multi-scale and multi-resolution agent-based in silico glioma model. While "multi-scale" refers to employing an epidermal growth factor receptor (EGFR)-driven molecular network to process cellular phenotypic decisions within the micro-macroscopic environment, "multi-resolution" is achieved through algorithms that classify cells to either active or inactive spatial clusters, which determine the resolution they are simulated at. The aim is to assign computational resources where and when they matter most for maintaining or improving the predictive power of the algorithm, onto specific tumor areas and at particular times. Using a previously described 2D brain tumor model, we have developed four different computational methods for achieving the multi-resolution scheme, three of which are designed to dynamically train on the high-resolution simulation that serves as control. To quantify the algorithms' performance, we rank them by weighing the distinct computational time savings of the simulation runs versus the methods' ability to accurately reproduce the high-resolution results of the control. Finally, to demonstrate the flexibility of the underlying concept, we show the added value of combining the two highest-ranked methods.