在超声波计算机断层扫描中,用于加速声速成像的几何先验告知曲射线跟踪
Yiming Huang1, Yi Zeng1, Shilong Cui1
1School of Information Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
Ultrasonics
|March 13, 2025
概括
这项研究通过优化声速 (SOS) 图像重建来加速使用超声计算机断层扫描 (USCT) 进行乳腺癌查. 新方法显著减少了计算时间,而不会影响图像质量.
科学领域:
- 医疗成像医学成像
- 生物医学工程 生物医学工程
- 计算物理 计算物理
背景情况:
- 曲射线追踪超声波计算机断层扫描 (USCT) 量化图像乳腺声速 (SOS) 分布用于癌症查.
- 图像重建依赖于通过快速行进方法 (FMM) 解决的计算昂贵的Eikonal方程.
- 在USCT中的声学环境包括一个同质的合介质和一个异质的乳房对象.
研究的目的:
- 开发一种加速SOS图像形成的方法,用于曲射线追踪USCT.
- 利用对象边界的先验信息来减少计算负载.
- 提高USCT的效率,以加强乳腺癌查.
主要方法:
- 提出了部分快速行进方法 (FMM) 和射线追踪策略,以限制Eikonal方程评估到对象区域.
- 将图像重建区域限制在对象内部,以增强优化趋同.
- 使用模拟和幻影成像实验与环转换器阵列验证了该方法.
主要成果:
- 对于占视野20.3%-56.3%的物体,实现了30.1%-61.9%的图像重建时间缩短.
- 证明时间缩短取决于对象的大小.
- 保持与经典重建方法相比的图像质量.
结论:
- 拟议的方法显著加速SOS图像形成在曲射线追踪USCT.
- 这种加速可以提高乳腺癌查患者的吞吐量.
- 该战略为更快,更有效的USCT成像提供了一种实际解决方案.
相关概念视频
01:17Ultrasonography
4.3K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
During an ultrasonography procedure, a handheld device called...
4.3K
01:10Computed Tomography
4.2K
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...
4.2K