arXiv:2509.10257cs.CV2025-09中稿 · the PIPPI Workshop…被引 1

对比三种超分辨率方法,发现NeSVoR最稳定且诊断准确率不受影响。

Robustness and Diagnostic Performance of Super-Resolution Fetal Brain MRI

  • 用三种超分辨算法重建胎儿脑部三维高分辨率影像
  • NeSVoR成功率超90%,病理与正常组均表现稳定
  • 尽管体积测量有差异,但诊断结果不受影响,适合临床使用

胎儿脑部MRI依赖快速多视角2D切片采集以减少胎动伪影,但图像通常分辨率低、易受运动干扰,且无法充分呈现3D解剖结构。超分辨率重建(SRR)通过结合切片到体数据配准与超分辨率技术,生成高分辨率(HR)3D体积。本研究将三种先进SRR方法(NiftyMIC、SVRTK、NeSVoR)应用于140例胎儿脑MRI扫描,包括健康对照组(HC)和伴脑室扩张(VM)的病理组(PC)。每例HR重建后采用BoUNTi算法分割九个主要脑区体积。评估了视觉质量、重建成功率、体积测量一致性及诊断分类性能。NeSVoR在两组中均表现出最高且最稳定的重建成功率(>90%)。尽管不同SRR方法间存在显著体积估计差异,但对脑室扩张的分类性能不受影响。结果表明NeSVoR具有强鲁棒性,且诊断性能对SRR引起的体积变异具有韧性。

原文摘要 · Abstract (English)

Fetal brain MRI relies on rapid multi-view 2D slice acquisitions to reduce motion artifacts caused by fetal movement. However, these stacks are typically low resolution, may suffer from motion corruption, and do not adequately capture 3D anatomy. Super-resolution reconstruction (SRR) methods aim to address these limitations by combining slice-to-volume registration and super-resolution techniques to generate high-resolution (HR) 3D volumes. While several SRR methods have been proposed, their comparative performance - particularly in pathological cases - and their influence on downstream volumetric analysis and diagnostic tasks remain underexplored. In this study, we applied three state-of-the-art SRR method - NiftyMIC, SVRTK, and NeSVoR - to 140 fetal brain MRI scans, including both healthy controls (HC) and pathological cases (PC) with ventriculomegaly (VM). Each HR reconstruction was segmented using the BoUNTi algorithm to extract volumes of nine principal brain structures. We evaluated visual quality, SRR success rates, volumetric measurement agreement, and diagnostic classification performance. NeSVoR demonstrated the highest and most consistent reconstruction success rate (>90%) across both HC and PC groups. Although significant differences in volumetric estimates were observed between SRR methods, classification performance for VM was not affected by the choice of SRR method. These findings highlight NeSVoR's robustness and the resilience of diagnostic performance despite SRR-induced volumetric variability.

超分辨率胎儿影像脑发育医学影像

Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。