相关实验视频

Updated: Jun 9, 2025

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

基于生成对抗网络的X射线相位对比成像恢复

Jiacheng Zeng¹, Jianheng Huang², Jiancheng Zeng³

¹Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China.

Scientific reports

|October 31, 2024

概括

本研究引入了一个生成对抗网络 (GAN) 模型,用于快速,低剂量的X射线相位对比成像. 这种先进的模型可以恢复高质量的图像,改进了传统的光元素材料分析方法.

科学领域:

医疗成像医学成像
计算成像技术的成像
材料科学材料科学材料科学

背景情况:

X射线相位对比成像为光元素材料提供了比吸收成像更好的对比.
像里埃变换这样的现有方法产生更快的成像,但质量较差,而相位转移方法是缓慢的和高剂量的.
需要快速,低剂量重建高质量的相位对比X射线图像.

研究的目的:

开发一种新的生成对抗网络 (GAN) 模型,用于快速重建低剂量X射线相位对比图像.
提高图像质量指标,如峰值信号噪声比 (PSNR) 和结构相似性指数 (SSIM).
通过不同相对比成像系统验证模型的性能.

主要方法:

开发了一种具有自定义层和自我注意机制的GAN模型,用于相对比图像恢复.
从Kaggle的X射线数据中获得的模拟数据集使用GAN进行训练.
在从单格,Talbot-Lau和级联格相对比系统的边缘图像上验证了模型.

主要成果:

在模拟实验中实现了PSNR和SSIM的显著改进.
从实验边缘数据中成功恢复了高质量的相位对比图像.
在各种相对比设置中展示了有效的图像恢复.

结论:

提出的基于GAN的方法能够快速,高质量的重建低剂量X射线相位对比图像.
该模型对光元素材料成像中的应用非常有希望,尽管在更简单的样本上进行了测试.
这种方法解决了现有的相位对比成像重建技术的局限性.

关键词:

生成性的对抗性网络.峰值信号与噪声的比率.条纹图像恢复条纹图像恢复结构上的相似性结构上的相似性在X射线相位对比成像中使用X射线相位对比成像.

更多相关视频

3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography

3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography

Published on: October 24, 2019

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

X-ray Imaging

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...