相关实验视频

Updated: Jul 5, 2025

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Published on: January 31, 2025

利用基于双能量计算机断层扫描材料分解的增强图像进行骨质疏松症的机会性查:与定量计算机断层扫描进行比较

Xiaoyu Tong¹, Xin Fang¹, Shigeng Wang¹

¹Department of Radiology, First Affiliated Hospital of Dalian Medical University, Dalian, China.

Quantitative imaging in medicine and surgery

|January 15, 2024

概括

双能CT (DECT) 材料分解可以使用酸 (HAP) 和 (Ca) 测量准确评估骨矿物密度 (BMD). 这种技术为接受对比度增强CT扫描的患者的机会性骨质疏松症查提供了一种新的方法.

科学领域:

放射学放射学是一门学科.
医疗成像医学成像
骨的新陈代谢骨的新陈代谢

背景情况:

化疗和放射治疗可以对癌症患者的骨矿物质密度 (BMD) 产生负面影响.
增强型计算机断层扫描 (CT) 扫描经常用于癌症分期和治疗监测.
使用现有的CT数据进行机会性骨质疏松症查对于高风险人群是有价值的.

研究的目的:

评估机会性骨质疏松症查使用双能CT (DECT) 与材料分解技术的可行性.
与定量CT (QCT) 相比,评估DECT衍生的BMD测量的准确性.

主要方法:

346名患者接受了无增强和三相对比增强的腹部CT扫描.
在L1-L3脊椎体中测量了骨矿物质密度 (BMD),酸 (HAP) 和 (Ca) 密度.
用Bland-Altman分析将DECT衍生的BMD (BMD-DECT) 与QCT衍生的BMD (BMD-QCT) 进行了比较.

主要成果:

脊椎体中的HAP和Ca密度在CT阶段之间没有显著差异.
在HAP/Ca密度和BMD (r > 0.94) 之间观察到强烈的正相关性.
在骨质疏松症 (AUC:0.963-0.964) 和骨质疏松症 (AUC:0.950-0.951) 中,DECT显示出高的诊断性能.

结论:

DECT材料分解有效地测量了HAP和Ca密度,用于BMD评估.
该技术提供了一种可靠的方法,用于对比度增强CT扫描的机会性骨质疏松症查.
在风险患者群体中,DECT为评估骨健康提供了一个有希望的新视角.

关键词:

骨矿物质密度 (BMD) 是指骨的矿物质密度.对比媒介是对比媒介.双能计算断层扫描 (DECT) 是一种双能计算断层扫描.骨质疏松症是一种骨质疏松症.骨质疏松性骨折骨质疏松性骨折的发生

更多相关视频

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

Published on: September 28, 2017

Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis

Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis

Published on: March 11, 2017

相关概念视频

Computed Tomography

Computed 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...

X-ray Imaging

X-ray Imaging

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...