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Updated: Jul 9, 2026
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颜色透成像:计算机断层扫描的一个新应用
Lancet (London, England)
|March 16, 1991
概括
这项研究引入了一种新的计算机断层扫描 (CT) 成像方法,用于绘制组织 perfusion. 该技术使用对比度增强模式来量化血液流动,以便进行详细的区域分析.
科学领域:
- 医疗成像医学成像
- 放射学 放射学是一门学科.
- 生理学 生理学 生理学
背景情况:
- 计算机断层扫描 (CT) 是一种广泛使用的成像方式.
- 评估组织输液对于诊断和管理各种疾病至关重要.
- 目前使用CT量化输液的方法存在局限性.
研究的目的:
- 介绍CT的一种新型应用,用于创建组织 perfusion 的可量化的地图.
- 为了证明使用颜色尺度显示 perfusion 的能力.
- 将定量输液数据与CT的高空间分辨率相结合.
主要方法:
- 获得CT图像的快速序列,在静脉注射放射性对比物质后立即进行注射.
- 分析选定的片段内每个像素的增强速率.
- 使用增强率来确定组织输液.
主要成果:
- 开发一种技术,以生成组织 perfusion 的可量化的地图.
- 使用颜色尺度显示输液数据.
- 成功地将定量区域输液评估与CT的高空间分辨率相结合.
结论:
- 描述的CT应用程序为可视化和量化组织输液提供了一种新的方法.
- 这种技术为医学成像中的区域 perfusion 分析提供了宝贵的工具.
- 整合具有高空间分辨率的定量输液数据可以提高诊断能力.
相关概念视频
01:26Phase 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...
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...
01:10Computed Tomography
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...