超薄视图X射线计算机断层扫描用于4D成像.
Yanjie Zheng1, Kelsey B Hatzell1,2
1Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08540, United States.
ACS applied materials & interfaces
|July 13, 2023
概括
使用不到10张二维图像,Tomo-NeRF重建了高保真度的3DX射线计算机断层扫描图像. 这种稀疏视图成像方法增强了现场和操作研究的4D成像.
科学领域:
- 材料科学 材料科学 材料科学
- 图像技术技术的成像技术
- 计算科学 计算科学
背景情况:
- X射线计算机断层扫描 (CT) 是用于3D材料成像的重要非侵入性技术.
- 传统的3DCT需要大量图像,这限制了动态研究 (4D成像) 的时间分辨率.
- 稀疏视图成像在保持图像保真方面存在挑战.
研究的目的:
- 介绍Tomo-NeRF,这是一种用于高保真度3DCT重建的新型稀疏视图成像方法.
- 用有限的二维放射图像来评估Tomo-NeRF的性能.
- 评估Tomo-NeRF在改进4D成像应用中的潜力.
主要方法:
- 开发了Tomo-NeRF,一种基于神经辐射场的方法,用于稀疏视图CT重建.
- 获取并使用实验性的二维和三维X射线图像进行验证.
- 在双视图,四视图和六视图场景中测试了重建功能.
主要成果:
- Tomo-NeRF成功地从<10个二维放射图像中重建了高保真度的3D图像.
- 实验验证显示高结构相似性 (0.9971-0.9975) 和精度 (81.83-89.59%).
- 实验数据的重建准确性与合成数据的结果相比.
结论:
- Tomo-NeRF使得从显著减少的二维图像集中实现高质量的3D CT重建.
- 这种方法为增强4D成像中的时间分辨率提供了一个有希望的解决方案.
- Tomo-NeRF在材料和工程元件的稀疏视图CT成像领域取得了进展.
相关概念视频
Computed Tomography
4.6K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
4.6K
Electron Microscope Tomography and Single-particle Reconstruction
2.4K
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
2.4K
X-ray Imaging
5.6K
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...
5.6K
Imaging Studies III: Computed Tomography
28
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
28


