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Abstract #0382

A Fully Automated Deep-Learning Model for Differentiating Diffuse Gliomas and Circumscribed Astrocytic Gliomas: A Multi-center Study

Shuang Li1 and Qiang Yue1
1West China Hospital of Sichuan university, Chengdu, China

Synopsis

Keywords: Diagnosis/Prediction, Machine Learning/Artificial Intelligence

Motivation: The WHO classification divides gliomas into diffuse and circumscribed types, where accurate preoperative differentiation is crucial for treatment planning but remains challenging with conventional methods.

Goal(s): To develop and validate a deep learning framework for automated preoperative segmentation and classification of diffuse gliomas and circumscribed astrocytic gliomas using multimodal MRI.

Approach: A multi-center study implementing a two-stage deep learning method combining 3D U-Net segmentation and ResNet50 classification, trained and validated on CE-T1 and T2FLAIR sequences.

Results: The model achieved high performance in both internal (AUC: 0.872) and external validation (AUCs: 0.735-0.794), significantly improving radiologists' diagnostic accuracy.

Impact: The integrated deep learning framework demonstrates robust performance in segmenting and differentiating diffuse gliomas and circumscribed astrocytic gliomas across multi-institutional datasets. Notably, the system significantly enhanced the preoperative diagnostic performance of radiologists across all experience levels.

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