Comparison of image quality and lesion conspicuity between conventional and deep learning reconstruction in gadoxetic acid-enhanced liver MRI.

IF 4.1 2区医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Insights into Imaging Pub Date : 2024-10-28 DOI:10.1186/s13244-024-01825-2

Jeong Hee Yoon, Jeong Eun Lee, So Hyun Park, Jin Young Park, Jae Hyun Kim, Jeong Min Lee

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引用次数: 0

Abstract

Objective: To compare the image quality and lesion conspicuity of conventional vs deep learning (DL)-based reconstructed three-dimensional T1-weighted images in gadoxetic acid-enhanced liver magnetic resonance imaging (MRI).

Methods: This prospective study (NCT05182099) enrolled participants scheduled for gadoxetic acid-enhanced liver MRI due to suspected focal liver lesions (FLLs) who provided signed informed consent. A liver MRI was conducted using a 3-T scanner. T1-weighted images were reconstructed using both conventional and DL-based (AIR^TM Recon DL 3D) reconstruction algorithms. Three radiologists independently reviewed the image quality and lesion conspicuity on a 5-point scale.

Results: Fifty participants (male = 36, mean age 62 ± 11 years) were included for image analysis. The DL-based reconstruction showed significantly higher image quality than conventional images in all phases (3.71-4.40 vs 3.37-3.99, p < 0.001 for all), as well as significantly less noise and ringing artifacts than conventional images (p < 0.05 for all), while also showing significantly altered image texture (p < 0.001 for all). Lesion conspicuity was significantly higher in DL-reconstructed images than in conventional images in the arterial phase (2.15 [95% confidence interval: 1.78, 2.52] vs 2.03 [1.65, 2.40], p = 0.036), but no significant difference was observed in the portal venous phase and hepatobiliary phase (p > 0.05 for all). There was no significant difference in the figure-of-merit (0.728 in DL vs 0.709 in conventional image, p = 0.474).

Conclusion: DL reconstruction provided higher-quality three-dimensional T1-weighted imaging than conventional reconstruction in gadoxetic acid-enhanced liver MRI.

Critical relevance statement: DL reconstruction of 3D T1-weighted images improves image quality and arterial phase lesion conspicuity in gadoxetic acid-enhanced liver MRI compared to conventional reconstruction.

Key points: DL reconstruction is feasible for 3D T1-weighted images across different spatial resolutions and phases. DL reconstruction showed superior image quality with reduced noise and ringing artifacts. Hepatic anatomic structures were more conspicuous on DL-reconstructed images.

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常规和深度学习重建在钆醋酸增强肝脏磁共振成像中的图像质量和病灶清晰度比较

目的比较常规与基于深度学习（DL）的重构三维 T1 加权图像在钆醋酸增强肝脏磁共振成像（MRI）中的图像质量和病灶清晰度：这项前瞻性研究（NCT05182099）招募了因疑似局灶性肝脏病变（FLLs）而计划接受钆醋酸增强肝脏磁共振成像检查并签署知情同意书的参与者。肝脏磁共振成像使用 3-T 扫描仪进行。采用传统和基于 DL（AIRTM Recon DL 3D ）的重建算法重建 T1 加权图像。三位放射科医生以 5 分制独立评定图像质量和病变的清晰度：50 名参与者（男性 = 36，平均年龄为 62 ± 11 岁）参与了图像分析。在所有阶段，基于 DL 重建的图像质量均明显高于传统图像（3.71-4.40 vs 3.37-3.99，P 0.05）。结论：结论：在钆醋酸增强肝脏磁共振成像中，DL 重建比传统重建提供了更高质量的三维 T1 加权成像：与传统重建相比，三维T1加权图像的DL重建提高了钆醋酸增强肝脏MRI的图像质量和动脉期病变的清晰度：DL重建适用于不同空间分辨率和相位的三维T1加权图像。DL 重建显示出卓越的图像质量，减少了噪声和振铃伪影。肝脏解剖结构在 DL 重建图像上更加清晰。

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来源期刊

Insights into Imaging Medicine-Radiology, Nuclear Medicine and Imaging

CiteScore

7.30

自引率

4.30%

发文量

182

审稿时长

13 weeks

期刊介绍： Insights into Imaging (I³) is a peer-reviewed open access journal published under the brand SpringerOpen. All content published in the journal is freely available online to anyone, anywhere! I³ continuously updates scientific knowledge and progress in best-practice standards in radiology through the publication of original articles and state-of-the-art reviews and opinions, along with recommendations and statements from the leading radiological societies in Europe. Founded by the European Society of Radiology (ESR), I³ creates a platform for educational material, guidelines and recommendations, and a forum for topics of controversy. A balanced combination of review articles, original papers, short communications from European radiological congresses and information on society matters makes I³ an indispensable source for current information in this field. I³ is owned by the ESR, however authors retain copyright to their article according to the Creative Commons Attribution License (see Copyright and License Agreement). All articles can be read, redistributed and reused for free, as long as the author of the original work is cited properly. The open access fees (article-processing charges) for this journal are kindly sponsored by ESR for all Members. The journal went open access in 2012, which means that all articles published since then are freely available online.