arXiv:2411.12146eess.IVcs.CV2024-11

用自监督学习降噪视野数据,提前2.3个月发现青光眼进展。

Self-supervised denoising of visual field data improves detection of glaucoma progression

  • 用掩码自编码器在训练时屏蔽部分视野数据,保留位置显著性值以优化降噪。
  • 相比原有方法,检测进展率提升4.7%,预测进展时间提前2.3个月。
  • 适合眼科医生和算法开发者用于提升青光眼动态监测的准确性。

视野测量能反映患者的周边视觉与日常功能,是判断青光眼进展的主要指标。然而,视野数据常存在高噪声,尤其在病情加重时更为明显。本研究利用自监督深度学习对超过4000名患者的视野数据进行降噪,提升了信噪比并增强对真实进展的检测能力。我们比较了变分自编码器(VAE)与掩码自编码器(MAE)的效果,发现引入每个视野位置的分类p值可显著改善平滑效果。掩码自编码器生成的去噪数据优于传统方法,点式线性回归(PLR)检测进展率提升4.7%。当包含p值时,两种模型预测的进展时间(TTP)平均提前2.3个月。结果支持:在训练中掩码视野元素并结合位置显著性信息,可有效提升对视野进展的检测能力。该方法具有临床意义,可用于未来视野分析系统,实现更早、更准确的青光眼进展预警。

原文摘要 · Abstract (English)

Perimetric measurements provide insight into a patient's peripheral vision and day-to-day functioning and are the main outcome measure for identifying progression of visual damage from glaucoma. However, visual field data can be noisy, exhibiting high variance, especially with increasing damage. In this study, we demonstrate the utility of self-supervised deep learning in denoising visual field data from over 4000 patients to enhance its signal-to-noise ratio and its ability to detect true glaucoma progression. We deployed both a variational autoencoder (VAE) and a masked autoencoder to determine which self-supervised model best smooths the visual field data while reconstructing salient features that are less noisy and more predictive of worsening disease. Our results indicate that including a categorical p-value at every visual field location improves the smoothing of visual field data. Masked autoencoders led to cleaner denoised data than previous methods, such as variational autoencoders. A 4.7% increase in detection of progressing eyes with pointwise linear regression (PLR) was observed. The masked and variational autoencoders' smoothed data predicted glaucoma progression 2.3 months earlier when p-values were included compared to when they were not. The faster prediction of time to progression (TTP) and the higher percentage progression detected support our hypothesis that masking out visual field elements during training while including p-values at each location would improve the task of detection of visual field progression. Our study has clinically relevant implications regarding masking when training neural networks to denoise visual field data, resulting in earlier and more accurate detection of glaucoma progression. This denoising model can be integrated into future models for visual field analysis to enhance detection of glaucoma progression.

青光眼自监督学习视野检测降噪

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