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Published on: November 30, 2022
Deep Learning Reconstruction Enables Prospectively Accelerated Clinical Knee MRI.
Patricia M Johnson1, Dana J Lin1, Jure Zbontar1
1From the Department of Radiology, New York University Grossman School of Medicine, 650 1st Ave, New York, NY 10016 (P.M.J., D.J.L., J.S.B., M.K., G.C., E.A., M.S., W.R.W., L.C., D.K.S., M.P.R., F.K.); Meta AI Research (FAIR), Menlo Park, Calif (J.Z., C.L.Z., A.S.); Meta AI Research, New York, NY (M.M.); Institute of Computer Graphics and Vision, Graz University of Technology, Graz, Austria (T.P.); and Faculty of Engineering, Friedrich Alexander University Erlangen-Nurnberg (FAU), Erlangen, Germany (F.K.).
Deep learning (DL) reconstruction significantly speeds up knee MRI scans, offering diagnostic equivalence to conventional methods. This advancement improves image quality and reduces scan time for evaluating knee internal derangements in clinical practice.
Area of Science:
- Radiology
- Medical Imaging
- Artificial Intelligence in Medicine
Background:
- Magnetic Resonance Imaging (MRI) is crucial for diagnosing knee injuries but suffers from long scan times.
- Deep learning (DL) offers potential for accelerated MRI image reconstruction, but clinical applicability remains uncertain.
Purpose of the Study:
- To assess the diagnostic equivalence of prospectively accelerated DL-reconstructed knee MRI compared to conventional accelerated MRI for internal derangements.
- To evaluate the impact of DL reconstruction on image quality and scan time in a clinical setting.
Main Methods:
- A DL model was trained on 298 knee MRI exams.
- 170 patients underwent both conventional accelerated and DL accelerated knee MRI protocols.
- Musculoskeletal radiologists assessed diagnostic equivalence for abnormalities and compared image quality metrics.
Main Results:
- DL-reconstructed images were found to be diagnostically equivalent to conventional images for detecting knee abnormalities.
- Overall image quality was significantly superior for DL-reconstructed images (P < .001).
- DL reconstruction enabled a nearly twofold reduction in MRI scan time.
Conclusions:
- DL reconstruction is a clinically viable method for accelerating knee MRI, maintaining diagnostic accuracy.
- This technology enhances image quality and significantly reduces patient scan time for knee evaluations.
