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Deep Learning Reconstructed New-Generation 0.55 T MRI of the Knee—A Prospective Comparison With Conventional 3 T MRI

磁共振成像 医学 膝关节痛 核医学 分级(工程) 放射科 病理 骨关节炎 工程类 土木工程 替代医学
作者
Ricardo Donners,Jan Vosshenrich,Magdalena Seng,M Fenchel,Dominik Nickel,Michael Bach,Florian Schmaranzer,Inga Todorski,Markus M. Obmann,Dorothee Harder,Hanns‐Christian Breit
出处
期刊:Investigative Radiology [Lippincott Williams & Wilkins]
被引量:1
标识
DOI:10.1097/rli.0000000000001093
摘要

Objectives The aim of this study was to compare deep learning reconstructed (DLR) 0.55 T magnetic resonance imaging (MRI) quality, identification, and grading of structural anomalies and reader confidence levels with conventional 3 T knee MRI in patients with knee pain following trauma. Materials and Methods This prospective study of 26 symptomatic patients (5 women) includes 52 paired DLR 0.55 T and conventional 3 T MRI examinations obtained in 1 setting. A novel, commercially available DLR algorithm was employed for 0.55 T image reconstruction. Four board-certified radiologists reviewed all images independently and graded image quality, noted structural anomalies and their respective reporting confidence levels for the presence or absence, as well as grading of bone, cartilage, meniscus, ligament, and tendon lesions. Image quality and reader confidence levels were compared ( P < 0.05, significant), and MRI findings were correlated between 0.55 T and 3 T MRI using Cohen kappa (κ). Results In reader's consensus, good image quality was found for DLR 0.55 T MRI and 3 T MRI (3.8 vs 4.1/5 points, P = 0.06). There was near-perfect agreement between 0.55 T DLR and 3 T MRI regarding the identification of structural anomalies for all readers (each κ ≥ 0.80). Substantial to near-perfection agreement between 0.55 T and 3 T MRI was reported for grading of cartilage (κ = 0.65–0.86) and meniscus lesions (κ = 0.71–1.0). High confidence levels were found for all readers for DLR 0.55 T and 3 T MRI, with 3 readers showing higher confidence levels for reporting cartilage lesions on 3 T MRI. Conclusions In conclusion, new-generation 0.55 T DLR MRI provides good image quality, comparable to conventional 3 T MRI, and allows for reliable identification of internal derangement of the knee with high reader confidence.
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