Performance at larger upsampling factors

Determine the performance of the attention-guided multi-scale super-resolution network for 4D flow MRI when the spatial upsampling factor exceeds two.

Background

The study investigates only a twofold spatial resolution enhancement for carotid 4D flow MRI. Because super-resolution applications may require greater enlargement factors, the behavior and accuracy of the proposed network at larger upsampling factors remain unresolved.

References

Second, only a resolution enhancement by a factor of two was investigated, and the performance at larger upsampling factors remains to be studied.

— Attention-guided super-resolution of 4D flow MRI in carotid arteries  (2609.04891 - Mokhtari et al., 4 Sep 2026) in Section Results and Discussion, limitations paragraph