冠状动脉狭窄的检测通过对比增强,回顾性心电图门,多切片螺旋计算断层扫描
S Achenbach1, T Giesler, D Ropers
1Department of Internal Medicine II, Institute of Medical Physics, University of Erlangen-Nürnberg, Germany. stephan.achenbach@rzmail.uni-erlangen.de
多切片螺旋计算断层扫描 (MSCT) 可以检测冠状动脉狭窄症. 然而,图像质量的限制,主要是由于运动工件,可能会影响其临床实用性.
科学领域:
- 心血管成像 - 心血管成像
- 放射学 放射学是指放射学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 多切片螺旋计算断层扫描 (MSCT) 可使冠状动脉可视化.
- 追溯心电图隔离用于MSCT中的图像重建.
研究的目的:
- 调查MSCT具有回顾性ECG门的能力,以识别高等级的冠状动脉狭窄和闭塞.
- 将MSCT发现与定量冠状动脉血管学进行比较.
主要方法:
- 64名患者接受了MSCT,具有特定参数 (4x1毫米切片,500毫秒旋转,1.5毫米/旋转表料).
- 使用了静脉注射的对比剂和回顾性心电图隔离.
- 冠状动脉和侧枝 (直径>/=2.0毫米) 被评估可评估性,狭窄性 (>70%) 和闭塞.
主要成果:
- 在256个冠状动脉中,有174个 (68%) 是可评估的;30%的患者已经评估了所有动脉.
- 冠状动脉运动器件是不可估量的动脉的主要原因.
- 在可评估的动脉中,MSCT检测到58%的高度狭窄/闭塞 (32/58);对于动脉狭窄,敏感度为91%,特异性为84%.
结论:
- 具有回顾性心电图门的MSCT可以在图像质量充足时准确检测冠状动脉狭窄症.
- 目前临床使用受限于图像质量问题,主要来自冠状动脉运动.
- 需要进一步的进步来克服与运动相关的文物,以提高诊断准确度.
更多相关视频
06:29Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
Published on: June 11, 2019
06:57Author Spotlight: Advancing Cardiovascular Imaging - Introducing the Spatially Weighted Calcium Score for Early Disease Detection
Published on: September 22, 2023
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 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...
Imaging Studies for Cardiovascular System IV: CMRI
Imaging Studies for Cardiovascular System V: CT
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Acute Coronary Syndrome III: Diagnostic Studies
