Do Synthetic Brain MRIs Reliably Improve Tumour Classification? A StyleGAN2-ADA Class-Plane Augmentation Study on BRISC 2025
Researchers investigated the effectiveness of synthetic brain MRI images generated by StyleGAN2-ADA for improving tumor classification tasks. They found that while a GPT-5.5 model could only slightly distinguish synthetic from real images, the utility of these synthetic images varied significantly based on the downstream classifier architecture and the ratio of synthetic to real data. Specifically, the MobileViTV2 model showed a modest but statistically significant improvement in tumor classification accuracy with filtered synthetic data, and also reached optimal performance faster. AI
IMPACT Synthetic data generation techniques may offer efficiency gains for training specific AI models in medical imaging, but their utility is highly dependent on the model architecture.