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Deep learning reconstruction for turbo spin echo to prospectively accelerate ankle MRI: A multi-reader study.

Yuxue Xie¹, Xiangwen Li¹, Yiwen Hu¹

¹Department of Radiology & Institute of Medical Functional and Molecular Imaging, Huashan Hospital, Fudan University, Shanghai, China.

European Journal of Radiology

|April 9, 2024

Summary

Deep learning reconstruction for turbo spin echo (DLR-TSE) significantly reduces ankle MRI scan times and improves image quality. This advanced technique maintains lesion detectability, offering a faster and better diagnostic experience.

Keywords:

Ankle MRI Deep learning Image quality Interchangeability analysis Turbo spin echo

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Area of Science:

Radiology
Medical Imaging
Artificial Intelligence in Medicine

Background:

Conventional turbo spin echo (TSE) sequences in ankle MRI are time-consuming.
Optimizing acquisition time while maintaining diagnostic quality is crucial for patient comfort and throughput.

Purpose of the Study:

To evaluate a deep learning reconstruction for turbo spin echo (DLR-TSE) in ankle MRI.
To compare DLR-TSE with conventional TSE regarding acquisition time, image quality, and lesion detectability.

Main Methods:

Prospective enrollment of 56 patients undergoing ankle MRI.
Comparison of conventional TSE protocol with a prospectively undersampled DLR-TSE protocol.
Independent assessment of image quality and lesion detection by four radiologists, including interchangeability analysis.

Main Results:

DLR-TSE reduced total acquisition time by 57.4% (233s vs. 547s).
DLR-TSE demonstrated superior overall image quality, with fewer artifacts and less noise (P < 0.05).
No significant differences were found in differentiation of anatomic details, diagnostic confidence, or lesion detection between DLR-TSE and conventional TSE (P > 0.05).

Conclusions:

Deep learning reconstruction can prospectively accelerate conventional TSE ankle MRI.
DLR-TSE provides superior image quality and comparable lesion detectability to conventional TSE.
This technique enables a comprehensive ankle MRI examination in approximately 4 minutes.