使用心脏计算机断层扫描对心房导系统的非侵入性可视化
Mirmilad Khoshknab1, Tarek Zghaib1, Lingyu Xu1
1Division of Medicine, Section of Cardiac Electrophysiology, Hospital of the University of Pennsylvania, Philadelphia.
与对比度增强的心脏计算机断层扫描 (CECT) 通过可视化周围的脂肪来准确识别特殊导电系统 (AVCS). 这种非侵入性方法有助于规划心脏手术,提高安全性和有效性.
科学领域:
- 心血管成像 - 心血管成像
- 心脏电生理学 心脏电生理学
- 医学物理 医学物理
背景情况:
- 对心导导系统 (AVCS) 的非侵入性定位对于计划复杂的心脏手术和干预非常重要.
- 精确的解剖绘图提高了手术的安全性和有效性,特别是在透气管大动脉置换和先天性心脏病手术中.
研究的目的:
- 评估术前对比增强心脏计算机断层扫描 (CECT) 在定位AVCS时的准确性.
- 测试CECT是否能够识别AVCS周围的绝缘脂肪,以准确地确定其解剖位置.
主要方法:
- 在一个学术高等保健中心进行前性队列研究.
- 包括接受心房移除术前手术CET和电解剖绘图 (EAM) 的患者.
- 在注册的CECT和EAM图像上测量His电图信号和AVCS脂肪细分之间的距离.
主要成果:
- 这项研究包括20名患者 (平均年龄66岁,75%是男性).
- 在CET上,AVCS脂肪细分的平均衰减为2.9的Hounsfield单位.
- 从His电图到最近的AVCS脂肪声素的平均距离为3.3毫米.
结论:
- CECT可以准确地定位隔离AVCS的脂肪组织.
- 这种非侵入性技术可以提高针对心脏导电系统的程序的有效性和安全性.
- 在涉及AVCS的心脏干预中,CECT提供了一种宝贵的程序前规划工具.
更多相关视频
06:02Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens
Published on: April 18, 2013
08:13In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
相关概念视频
Computed Tomography
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...
Imaging Studies for Cardiovascular System I:Echocardiography
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
Imaging Studies for Cardiovascular System II:Types of Echocardiography
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for...
Radiological Investigation III: Pulmonary Angiogram and PET Scan
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Imaging Studies for Cardiovascular System III: X-Ray
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...
Radiological Investigation II: MRI and Ventilation Perfusion Scan
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
