相关实验视频

Updated: Jun 8, 2025

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

在冠状动脉计算机断层扫描血管学测量左心室质量的预后值

Michael Abiragi¹, Melanie Chen¹, Billy Lin¹

¹Department of Imaging, Medicine and Biomedical Science, Cedars-Sinai Medical Center, United States.

Journal of cardiovascular computed tomography

|November 2, 2024

概括

通过冠状动脉计算机断层扫描血管造影 (CCTA) 测量的左心室 (LV) 质量增加独立预测所有原因的死亡风险. 这项评估考虑了年龄和性别,确定了心肌质量较高的患者,以便更好地分层心血管风险.

科学领域:

心脏病学心脏病学
放射学放射学是一门学科.
预防医学预防医学

背景情况:

左心室 (LV) 质量是心血管风险的关键指标.
使用冠状动脉计算机断层扫描血管造影 (CCTA) 测量LV质量是一种可选但潜在的有价值的工具.
了解 LV 质量与死亡率之间的关系对于风险评估至关重要.

研究的目的:

评估CCTA测量的LV质量与全因死亡风险 (ACM) 之间的关联.
为了确定LV质量指数的特定年龄和性别分布.
为了确定LV质量是否改善心血管风险预测模型.

主要方法:

分析了来自4187名没有已知的冠状动脉疾病 (CAD) 的患者的CCTA数据.
计算特定于年龄和性别的LV质量指数百分比.
通过使用多变量Cox模型,对ACM在5.1年的中位随访期进行评估.
包括诸如年龄,性别,病史,冠状动脉 (CAC) 评分和CCTA狭窄等共同变量.

主要成果:

较高的LV质量指数百分位数与增加的ACM风险有显著的相关性.
LV质量指数改善了死亡率预测歧视和重新分类 (X2改善:22.68,NRI:28%,p < 0.001).
男性性别,非洲裔美国人,高血压,CAC> 400,吸烟预测增加了LV质量指数.

结论:

由CCTA评估的LV质量指数增加,在没有已知的CAD的患者中为ACM提供了独立和增量预后价值.
从CCTA衍生出的LV质量评估,包括年龄和性别分布,可以在临床上应用,以确定高风险的个体.
这种方法提高了超越传统因素对心血管风险分层的能力.

关键词:

冠状动脉计算机断层扫描血管图谱.左心室质量是左心室质量.预测预后预测预测

更多相关视频

Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection

Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection

Published on: September 22, 2023

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans

Published on: August 28, 2018

相关概念视频

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...

Imaging Studies for Cardiovascular System V: CT

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

Imaging Studies for Cardiovascular System III: X-Ray

Imaging Studies for Cardiovascular System III: X-Ray

The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...