AINeutralarXiv – CS AI · 5h ago6/10
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When is 3D Worth It? A Resource-Performance Frontier for CNNs and Transformers in Lung CT
Researchers studying lung CT imaging found that 2.5D CNNs provide the best balance of performance, stability, and computational efficiency for cancer screening compared to full 3D models or pure 2D approaches. The study challenges the assumption that 3D models are universally superior for volumetric medical imaging, revealing that 3D CNNs suffer from threshold instability while transformers produce unreliable degenerate predictions.