Application of a deep learning algorithm for combined super-resolution and partial fourier reconstruction including time reduction in T1-weighted precontrast and …

D Wessling, J Herrmann, S Afat, D Nickel, H Almansour… - Diagnostics, 2022 - mdpi.com
D Wessling, J Herrmann, S Afat, D Nickel, H Almansour, G Keller, AE Othman, AS Brendlin
Diagnostics, 2022mdpi.com
Purpose: The purpose of this study was to test the technical feasibility and the impact on the
image quality of a deep learning-based super-resolution reconstruction algorithm in 1.5 T
abdominopelvic MR imaging. Methods: 44 patients who underwent abdominopelvic MRI
were retrospectively included, of which 4 had to be subsequently excluded. After the
acquisition of the conventional volume interpolated breath-hold examination (VIBEStd),
images underwent postprocessing, using a deep learning-based iterative denoising super …
Purpose
The purpose of this study was to test the technical feasibility and the impact on the image quality of a deep learning-based super-resolution reconstruction algorithm in 1.5 T abdominopelvic MR imaging.
Methods
44 patients who underwent abdominopelvic MRI were retrospectively included, of which 4 had to be subsequently excluded. After the acquisition of the conventional volume interpolated breath-hold examination (VIBEStd), images underwent postprocessing, using a deep learning-based iterative denoising super-resolution reconstruction algorithm for partial Fourier acquisitions (VIBESR). Image analysis of 40 patients with a mean age of 56 years (range 18–84 years) was performed qualitatively by two radiologists independently using a Likert scale ranging from 1 to 5, where 5 was considered the best rating.
Results
Image analysis showed an improvement of image quality, noise, sharpness of the organs and lymph nodes, and sharpness of the intestine for pre- and postcontrast images in VIBESR compared to VIBEStd (each p < 0.001). Lesion detectability was better for VIBESR (p < 0.001), while there were no differences concerning the number of lesions. Average acquisition time was 16 s (±1) for the upper abdomen and 15 s (±1) for the pelvis for VIBEStd, and 15 s (±1) for the upper abdomen and 14 s (±1) for the pelvis for VIBESR.
Conclusion
This study demonstrated the technical feasibility of a deep learning-based super-resolution algorithm including partial Fourier technique in abdominopelvic MR images and illustrated a significant improvement of image quality, noise, and sharpness while reducing TA.
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