适应性卷积稀疏性与子频段相关性在NSCT领域的MRI图像融合
Qiu Hu1, Weiming Cai1,2, Shuwen Xu3
1School of Information Science and Engineering, NingboTech University, Ningbo 315100, People's Republic of China.
Physics in medicine and biology
|February 5, 2024
概括
本研究介绍了多式医学图像融合 (MMIF) 的自适应卷积稀疏性方案. 这种新方法通过提高细节保存和图像错误注册的稳定性来提高诊断准确性.
科学领域:
- 医疗成像医学成像
- 图像处理 图像处理
- 计算科学 计算科学
背景情况:
- 多模式医学图像融合 (MMIF) 通过整合来自不同成像模式的信息来提高诊断准确性.
- 卷积稀疏表示 (CSR) 由于全球优化和单值属性,在MMIF中比标准稀疏表示 (SR) 有优势.
- 现有的方法面临的挑战是词典冗余和错误注册的敏感性.
研究的目的:
- 为MMIF提出一个适应性的卷积稀疏性方案,以解决字典冗余和错误注册的问题.
- 为了提高合医疗图像中的结构和纹理细节的保存.
- 提高MMIF的诊断效率和准确性.
主要方法:
- 拟议的方案将图像分解为基层和细节层,使用提霍诺夫规则化优化问题.
- 细节层通过预先训练的字典过器进行稀疏分解,并使用非亚样本轮变换 (NSCT) 域中的子频段相关性精制的融合系数图.
- 基层通过平均值被合并,双尺度重建产生最终的合并图像.
主要成果:
- 实验结果表明该方案在消除错误注册干扰方面的有效性.
- 拟议的方法在保存结构和纹理细节方面优于最先进的融合技术,由主观和客观评估证实.
- 临床图像集验证了融合方案的卓越性能.
结论:
- 开发的核聚变方案具有竞争力,提供低冗余字典,对错误注册的稳定性和卓越的核聚变性能.
- 使用最小样本的自适应字典训练和基于NSCT的子频段相关性保持CSR属性,以增强细节保存.
- 为反向稀疏表示而优化的NSCT排序进一步提高了子频段相关性,促进了结构和纹理细节的保存.
相关概念视频
2D NMR: Overview of Heteronuclear Correlation Techniques
179
Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other...
179
Magnetic Resonance Imaging
5.2K
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...
5.2K
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
716
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
716
2D NMR: Overview of Homonuclear Correlation Techniques
198
Homonuclear correlation spectroscopy (COSY) is a powerful technique used in Nuclear Magnetic Resonance (NMR) spectroscopy to study the correlations between nuclei of the same type within a molecule. It provides information about scalar couplings between adjacent nuclei, which helps determine connectivity and structural information. There are several COSY variants, each with its unique strengths and experimental parameters.
COSY90 is the standard two-dimensional (2D) COSY experiment that...
COSY90 is the standard two-dimensional (2D) COSY experiment that...
198


