Effectiveness of deep learning-based reconstruction for improvement of image quality and liver tumor detectability in the hepatobiliary phase of gadoxetic acid-enhanced magnetic resonance imaging

Purpose To evaluate the effectiveness of deep learning-based reconstruction (DLR) in improving image quality and tumor detectability of isovoxel high-resolution breath-hold fat-suppressed T1-weighted imaging (HR-BH-FS-T1WI) in the hepatobiliary phase (HBP) of Gadoxetic acid-enhanced magnetic resonan...

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Veröffentlicht in:Abdominal imaging 2024-10, Vol.49 (10), p.3450-3463
Hauptverfasser: Takayama, Yukihisa, Sato, Keisuke, Tanaka, Shinji, Murayama, Ryo, Jingu, Ryotaro, Yoshimitsu, Kengo
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Sprache:eng
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Zusammenfassung:Purpose To evaluate the effectiveness of deep learning-based reconstruction (DLR) in improving image quality and tumor detectability of isovoxel high-resolution breath-hold fat-suppressed T1-weighted imaging (HR-BH-FS-T1WI) in the hepatobiliary phase (HBP) of Gadoxetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI). Materials and methods This retrospective evaluated 42 patients with 98 liver tumors who underwent Gd-EOB-MRI between March 2023 and May 2023 using three techniques based on HBP imaging: isovoxel HR-BH-FS-T1WI reconstructed (1) with DLR (BH-DLR +) and (2) without DLR (BH-DLR −) and (3) HR-FS-T1WI scanned with a free-breathing technique using a navigator-echo-triggered technique and DLR (Navi-DLR +). The three techniques were qualitatively and quantitatively compared by the Friedman test and the Bonferroni post-hoc test. Tumor detectability was compared using the McNemar test. Results BH-DLR + (3.85, average score of two radiologists) showed significantly better qualitative scores for image noise than BH-DLR − (2.84) and Navi-DLR + (3.37) (p 
ISSN:2366-0058
2366-004X
2366-0058
DOI:10.1007/s00261-024-04374-w