Diagnostic efficacy of deep learning-based denoising of low-field 0.55 T compared to conventional 3 T knee MRI.

0.55 T without deep learning showed a moderate sensitivity of 0.83, a specificity of 0.82, and an overall diagnostic accuracy of 0.83.

Agreement with 3 T was excellent for 0.55 T with deep learning (correlation coefficient: 0.94) and substantial for 0.55 T without deep learning (correlation coefficient: 0.78).

Image quality was significantly higher for 0.55 T with deep learning compared to 0.55 T without deep learning (2.92vs.2.55;p = 0.005), yet 3 T outperformed both (3.44;p < 0.001).