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arXiv 2311.13485eess.IVcs.CVcs.LG

基于深度学习的MRI加速用于儿科脑肿瘤患者的放射治疗规划

Deep-learning-based acceleration of MRI for radiotherapy planning of pediatric patients with brain tumors

Philips Healthcare(飞利浦医疗保健)

Shahinur Alam, Jinsoo Uh, Alexander Dresner, Chia-ho Hua, Khaled Khairy

AI总结:

本研究提出了一种基于深度学习的MRI重建方法DeepMRIRec,用于从RT特定接收线圈采集的欠采样数据中恢复图像,在73名脑肿瘤儿童数据上将扫描时间减少4倍且结构相似性超越现有方法。

摘要:

磁共振成像(MRI)是一种非侵入性诊断和放射治疗(RT)规划工具,能提供对人体解剖结构的详细洞察。漫长的扫描时间给患者带来压力,他们必须在优先考虑减少成像伪影的漫长成像过程中保持静止。这对于可能需要采取措施管理自主运动(如麻醉)的儿科患者来说极具挑战性。几种计算方法通过记录较少的测量数据并通过采集后重建以数字方式恢复完整信息来减少扫描时间(快速MRI)。然而,大多数快速MRI方法是为诊断成像开发的,未解决RT规划特有的重建挑战。在本研究中,我们开发了一种基于深度学习的方法(DeepMRIRec),用于从使用RT特定接收线圈排列采集的欠采样数据进行MRI重建。我们使用来自73名患有脑肿瘤/手术床的儿童的T1加权MR图像的完全采样数据,评估了我们的方法,这些数据是使用环形和后部线圈(12通道)采集的,并分别测试了应用和不应用线圈元件虚拟压缩的情况。DeepMRIRec将扫描时间减少了四倍,产生的结构相似性得分超过了所评估的最先进方法(0.960对比0.896),从而证明了其在加速RT规划MRI扫描方面的潜力。

英文摘要:

Magnetic Resonance Imaging (MRI) is a non-invasive diagnostic and radiotherapy (RT) planning tool, offering detailed insights into the anatomy of the human body. The extensive scan time is stressful for patients, who must remain motionless in a prolonged imaging procedure that prioritizes reduction of imaging artifacts. This is challenging for pediatric patients who may require measures for managing voluntary motions such as anesthesia. Several computational approaches reduce scan time (fast MRI), by recording fewer measurements and digitally recovering full information via post-acquisition reconstruction. However, most fast MRI approaches were developed for diagnostic imaging, without addressing reconstruction challenges specific to RT planning. In this work, we developed a deep learning-based method (DeepMRIRec) for MRI reconstruction from undersampled data acquired with RT-specific receiver coil arrangements. We evaluated our method against fully sampled data of T1-weighted MR images acquired from 73 children with brain tumors/surgical beds using loop and posterior coils (12 channels), with and without applying virtual compression of coil elements. DeepMRIRec reduced scanning time by a factor of four producing a structural similarity score surpassing the evaluated state-of-the-art method (0.960 vs 0.896), thereby demonstrating its potential for accelerating MRI scanning for RT planning.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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