arXiv:2602.00221eess.IVcs.CV2026-02被引 1

对比三种GAN模型在MRI重建中的表现,发现DCGAN和WGAN效果更优。

Benchmarking Vanilla GAN, DCGAN, and WGAN Architectures for MRI Reconstruction: A Quantitative Analysis

  • 用三种GAN架构分别重建膝、脑、心脏MRI图像。
  • DCGAN和WGAN的SSIM分别达0.97和0.99,优于Vanilla GAN的0.84。
  • 结果可复现,适合后续研究与临床影像应用。

磁共振成像(MRI)是观察人体内部结构的重要手段。本研究分析了三种主流GAN模型在提升MRI重建图像质量与诊断准确性方面的性能,包括基础GAN(Vanilla GAN)、深度卷积GAN(DCGAN)和瓦瑟斯坦GAN(WGAN)。模型在膝关节、大脑和心脏MRI数据集上训练与评估,以检验其跨器官泛化能力。其中,基础GAN基于对抗网络原理;DCGAN通过卷积层增强图像生成,突出空间特征;而WGAN采用瓦瑟斯坦距离缓解训练不稳定性,实现稳定收敛与高质量输出。实验使用1000张匿名膝关节、805张心脏、90张脑部MRI图像进行训练与测试。结果显示:Vanilla GAN的结构相似性指数(SSIM)为0.84,PSNR为26;DCGAN的SSIM为0.97,PSNR为49.3;WGAN的SSIM为0.99,PSNR为43.5。结果经统计验证,表明基于DCGAN和WGAN的框架在图像质量与精度方面表现更佳。本研究首次在统一预处理流程下对基础GAN进行跨器官基准测试,为未来混合型GAN与临床应用提供可复现的基准参考。

原文摘要 · Abstract (English)

Magnetic Resonance Imaging (MRI) is a crucial imaging modality for viewing internal body structures. This research work analyses the performance of popular GAN models for accurate and precise MRI reconstruction by enhancing image quality and improving diagnostic accuracy. Three GAN architectures considered in this study are Vanilla GAN, Deep Convolutional GAN (DCGAN), and Wasserstein GAN (WGAN). They were trained and evaluated using knee, brain, and cardiac MRI datasets to assess their generalizability across body regions. While the Vanilla GAN operates on the fundamentals of the adversarial network setup, DCGAN advances image synthesis by securing the convolutional layers, giving a superior appearance to the prevalent spatial features. Training instability is resolved in WGAN through the Wasserstein distance to minimize an unstable regime, therefore, ensuring stable convergence and high-quality images. The GAN models were trained and tested using 1000 MR images of an anonymized knee, 805 images of Heart, 90 images of Brain MRI dataset. The Structural Similarity Index (SSIM) for Vanilla GAN is 0.84, DCGAN is 0.97, and WGAN is 0.99. The Peak Signal to Noise Ratio (PSNR) for Vanilla GAN is 26, DCGAN is 49.3, and WGAN is 43.5. The results were further statistically validated. This study shows that DCGAN and WGAN-based frameworks are promising in MR image reconstruction because of good image quality and superior accuracy. With the first cross-organ benchmark of baseline GANs under a common preprocessing pipeline, this work provides a reproducible benchmark for future hybrid GANs and clinical MRI applications.

MRI重建GAN图像质量医学影像

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