Quadruple arterial phase dynamic EOB imaging using a novel DL reconstruction visualizing aortic wax and wane phenomenon: preliminary results

Motivation: Multi-arterial phase dynamic contrast enhanced imaging (DCE) is critical for assessing liver lesions. A novel deep learning reconstruction technology, DL Speed (DLS) offers the potential to further enhance these images with minimal degradation from under-sampled k-space data. Goal(s): To compare DLS-applied high-resolution quadruple arterial phase DCE (DLS-DCE) with conventional triple-phase DCE (conv-DCE) in liver MRI. Approach: In a study involving 40 patients, DLS-DCE and conv-DCE were assessed qualitatively, focusing on image quality and the aortic wax-and-wane (W&W) phenomenon. Results: DLS-DCE provided comparable image quality to conv-DCE but depicted the W&W phenomenon more frequently, indicating enhanced temporal resolution. Impact: DLS-DCE provides high quality liver DCE images with higher temporal resolution, revealing detailed hemodynamic change of the liver, features like the aortic wax-and-wane phenomenon. This advancement would help radiologists assess liver lesions more accurately, benefitting clinical decision-making and patient outcomes.