arXiv:2511.21114cs.CVcs.AI2025-11被引 1

用变形感知网络生成未来脑影像,助力阿尔茨海默病早期预测。

Deformation-aware Temporal Generation for Early Prediction of Alzheimers Disease

  • 引入双向时序变形感知模块,自动学习脑萎缩变化模式
  • 在ADNI数据集上生成图像质量达PSNR指标,提升分类准确率6.21%~21.25%
  • 适合神经影像分析与疾病预测研究者,尤其关注早期诊断

阿尔茨海默病(AD)是一种进行性脑退行性疾病,早期预测有助于延缓进展。随着病情发展,患者通常出现脑萎缩。现有预测方法多依赖人工提取脑影像形态学特征。本文提出一种新方法——变形感知时序生成网络(DATGN),自动学习脑影像在疾病进展中的形态变化,实现早期预测。针对磁共振成像(MRI)时序数据中常见的缺失问题,DATGN首先对不完整序列进行插值;随后,通过双向时序变形感知模块生成符合疾病进展规律的未来MRI图像。在ADNI数据集上的实验表明,生成图像在PSNR和MMSE等指标上表现良好。将DATGN生成的合成数据用于SVM、CNN及3DCNN分类模型后,AD vs. NC分类准确率提升6.21%至16%,AD vs. MCI vs. NC分类准确率提升7.34%至21.25%。定性可视化结果显示,生成图像与阿尔茨海默病脑萎缩趋势一致,支持早期疾病预测。

原文摘要 · Abstract (English)

Alzheimer's disease (AD), a degenerative brain condition, can benefit from early prediction to slow its progression. As the disease progresses, patients typically undergo brain atrophy. Current prediction methods for Alzheimers disease largely involve analyzing morphological changes in brain images through manual feature extraction. This paper proposes a novel method, the Deformation-Aware Temporal Generative Network (DATGN), to automate the learning of morphological changes in brain images about disease progression for early prediction. Given the common occurrence of missing data in the temporal sequences of MRI images, DATGN initially interpolates incomplete sequences. Subsequently, a bidirectional temporal deformation-aware module guides the network in generating future MRI images that adhere to the disease's progression, facilitating early prediction of Alzheimer's disease. DATGN was tested for the generation of temporal sequences of future MRI images using the ADNI dataset, and the experimental results are competitive in terms of PSNR and MMSE image quality metrics. Furthermore, when DATGN-generated synthetic data was integrated into the SVM vs. CNN vs. 3DCNN-based classification methods, significant improvements were achieved from 6. 21\% to 16\% in AD vs. NC classification accuracy and from 7. 34\% to 21. 25\% in AD vs. MCI vs. NC classification accuracy. The qualitative visualization results indicate that DATGN produces MRI images consistent with the brain atrophy trend in Alzheimer's disease, enabling early disease prediction.

阿尔茨海默病时序生成脑影像分析早期预测

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