超极化129Xe MRI的多模态增强去噪扩散模型研究

张明玉, 肖洒, 石胜杰, 张学成, 周欣

Research on a Multi-modal Enhanced Denoising Diffusion Model for Hyperpolarized 129Xe MRI

ZHANG Mingyu, XIAO Sa, SHI Shengjie, ZHANG Xuecheng, ZHOU Xin

表1 不同模型和本文模型在评价指标上的对比

Table 1 Comparison of different models and the model in this paper in terms of evaluation indicators

方法 PSNR SSIM 噪声图像 17.973±3.237** 0.512±0.163** NLM 20.862±3.481** 0.584±0.079** UNLM 24.319±3.125** 0.431±0.153** DnCNN 30.758±2.739** 0.814±0.053** HTC-net 31.915±2.452** 0.843±0.057** DDPM 32.116±2.283* 0.827±0.055** DDPM-HXe 33.264±2.594 0.847±0.058