相关实验视频

Updated: May 10, 2025

Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique

Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique

Published on: July 5, 2024

双向磁共振图像转换与基于变压器的对抗网络

Wenxin Li¹, Jun Xia², Weilin Gao¹

¹School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, PR China.

Medical physics

|April 24, 2025

概括

本研究介绍了DMTrans,这是一种基于变压器的新型模型,用于磁共振 (MR) 图像翻译. DMTrans实现了最先进的交叉序列MR图像合成,即使数据有限,也有助于临床诊断.

科学领域:

医疗成像医学成像
人工智能的人工智能
生物医学工程生物医学工程

背景情况:

磁共振 (MR) 图像转换模型的目的是从现有图像中生成所需序列的MR图像.
这些模型的通用化在外部数据集上往往很差,原因是数据分布在中心或扫描仪中的差异.

研究的目的:

为小型外部数据集提出一个具有高可转移性的交叉序列MR图像合成模型.
为了生成高质量的合成MR图像,在不同的数据分布中保持一致性.

主要方法:

使用基于变压器的对抗网络 (DMTrans) 开发了一种双向磁共振图像翻译模型.
集成了一个基于变压器的生成架构与一个新的顺序双尺度歧视器.
采用基于转移窗口的多头自我注意机制,以实现高效的全球和本地特征捕捉.

主要成果:

在大型数据集 (4229片) 上进行预训练的DMTrans,用于双向T1/T2加权的MR图像合成,性能优于基线方法.
为合成T1和T2图像生成实现了高定量指标 (SSIM,PSNR,MAE).
证明有效的模型适应新数据集与最小的数据 (500片从6名患者) 的T1/T2/PD图像翻译.

结论:

在交叉序列MR图像转换方面,DMTrans实现了最先进的性能,潜在地提高了临床诊断.
为高质量的MR图像合成提供了多功能和高效的解决方案,特别是在数据稀缺的情况下.

关键词:

图像合成MR图像合成生成性的对抗性网络.转移学习转移学习变压器的变压器是一个变压器.

更多相关视频

Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities

Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities

Published on: October 27, 2023

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images

Published on: April 21, 2023

相关概念视频

Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

Transformers

Transformers

A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...