相关实验视频
Updated: Jul 13, 2025

09:17
Point-of-Care Lung Ultrasound in Adults: Image Acquisition
Published on: March 3, 2023
6.1K
基于CT的多流量体积估计公式表明创伤性血胸部的准确性和可重复性较低
Grace Tewkesbury1, Carl Beyer2, Kevin Eddinger2
1Department of Radiology, Penn Medicine, United States.
Injury
|October 15, 2023
概括
简单的CT公式用于估计急性创伤性血胸口体积是不准确的,不能重现的. 手动测量对于评估血胸体积和指导治疗决策更可靠.
科学领域:
- 放射学 放射学是一门学科.
- 创伤外科 手术 创伤外科
- 胸部成像 胸部成像
背景情况:
- 准确估计血胸量对于管理急性创伤性血胸来说至关重要.
- 计算机断层扫描 (CT) 是评估胸部创伤的主要成像方法.
- 现有的基于CT的体积估计公式需要验证.
研究的目的:
- 评估基于CT的公式 (V = d2 * h) 的准确性和可重复性,以估计急性创伤性血胸体积.
- 为了比较公式的性能与手动体积测量.
- 为了评估这两种方法的评价者间可靠性.
主要方法:
- 对CT确认的急性创伤性血胸病患者的前景鉴定.
- 使用d2 * h公式和对轴形象的手动测量进行回顾体积估计.
- 对边界大小血胸 (200-400毫升) 的子组分析.
- 三位非放射科医生的重复测量和布兰德-阿尔特曼分析以达成一致.
主要成果:
- CT公式显示了与实际体积的广泛一致范围 (-718到+842 mL).
- 对于边界大小的血胸,准确度特别低 (达成协议的界限为-300到+121毫升).
- 与手动测量相比,配方的评价者间变异性明显高于手动测量.
结论:
- 基于CT的公式V = d2 * h在估计血胸体积时显示出显著的不准确性.
- 该配方在接近300毫升的分层体积中准确度较低,这限制了其临床效用.
- 手动基于CT的体积测量比估计公式提供了更高的准确性和可重复性.
相关概念视频
Pleural Effusion I: Introduction
1.1K
Pleural effusion is an abnormal fluid accumulation in the pleural cavity, a narrow space between the lungs and the chest wall. It is not a disease per se but rather a symptom or indication of an underlying disease. In normal circumstances, this space contains a small amount of fluid (5 to 15 mL), a lubricant facilitating the non-frictional movement of the pleural surfaces.
There are two main types of pleural effusion: transudative and exudative. They are differentiated using Light's...
There are two main types of pleural effusion: transudative and exudative. They are differentiated using Light's...
1.1K
Pleural Effusion II: Symptoms and Management
188
Pleural Effusion Overview
A pleural effusion is the abnormal collection of fluid between the parietal and visceral pleura layers of tissue that form the lining of the lungs and chest cavity. It can occur independently or due to surrounding parenchymal diseases, such as infection, malignancy, or inflammatory conditions.
Clinical Manifestations:
A pleural effusion is the abnormal collection of fluid between the parietal and visceral pleura layers of tissue that form the lining of the lungs and chest cavity. It can occur independently or due to surrounding parenchymal diseases, such as infection, malignancy, or inflammatory conditions.
Clinical Manifestations:
188
Endoscopic Studies II: Thoracocentesis
299
Thoracentesis(Thoracocentesis), commonly known as pleural tap, is a medical procedure where a 22 gauge needle is inserted into the pleural space, the area between the lung and chest wall. This procedure is commonly performed to diagnose or treat various respiratory disorders.
Description
Excess pleural fluid or air may accumulate in some respiratory disorders in the thoracic cavity. To treat pleural effusion, a physician conducts thoracentesis by carefully piercing the chest wall and entering...
Description
Excess pleural fluid or air may accumulate in some respiratory disorders in the thoracic cavity. To treat pleural effusion, a physician conducts thoracentesis by carefully piercing the chest wall and entering...
299
Pneumothorax-I
225
A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
225
Pneumothorax-II
172
Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:
Clinical Manifestations:
172
Pressure Relationships in Thoracic Cavity
2.4K
Breathing, otherwise known as pulmonary ventilation, is the process of air movement into and out of the lungs. The main mechanisms propelling pulmonary ventilation are atmospheric pressure (Patm), intra-pulmonary (Ppul ) or intra-alveolar pressure (Palv) within the alveoli, and intrapleural pressure (Pip) within the pleural cavity.
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs...
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs...
2.4K

