冠状动脉CTA
无创冠状动脉CT血管造影,用于显示冠状动脉狭窄和斑块。
什么是 Coronary?
冠状动脉 CTA(CT血管造影)是一种无创成像检查,使用造影剂和X射线可视化冠状动脉。它可以检测斑块堆积(动脉粥样硬化)、狭窄和心脏血管的阻塞。
工作原理: 检查期间,通过静脉注射造影剂。CT 扫描仪随后拍摄与您心跳同步的多张 X 射线图像(心电门控)。计算机将这些图像重建为冠状动脉的 3D 视图。
Coronary 的常见用途
胸痛评估
Evaluate patients with low to intermediate risk of coronary artery disease presenting with chest pain, as an alternative to invasive cardiac catheterization.
冠状动脉狭窄评估
Detect and quantify coronary artery stenosis, identify high-risk plaque features, and assess plaque burden.
支架或搭桥术后随访
Evaluate stent patency and bypass graft patency after coronary revascularization procedures.
先天性冠状动脉异常
Identify congenital coronary artery anomalies such as origin from wrong sinus, courses between great vessels, or fistulas.
优势
- ✓有创心导管检查的无创替代方案
- ✓高阴性预测值(>99%)——有效排除严重冠心病
- ✓快速检查(10-15分钟)
- ✓可表征斑块成分(钙化 vs 软斑块)
- ✓同时评估其他胸部结构(肺、主动脉、肺动脉)
局限性
- ⚠需要稳定心率(通常 <60-65 次/分)以获得最佳图像质量
- ⚠严重钙化会限制支架评估(开花伪影)
- ⚠需要造影剂(不适合肾病或造影剂过敏患者)
- ⚠辐射暴露(尽管现代方案显著降低剂量)
- ⚠高钙化评分患者价值有限(Agatston >400)
检查准备清单
已完成 0/7 项
相关影像方式
Combine with CT/MRI/US for complementary detail.
CT
CT scans use X-rays to create detailed cross-sectional images of the body. They are particularly useful for detecting bone fractures, tumors, and internal bleeding.
MRI
MRI uses powerful magnets and radio waves to produce detailed images of organs and soft tissues. Excellent for brain, spine, and joint imaging.
Ultrasound
Ultrasound uses sound waves to create real-time images. Commonly used for pregnancy monitoring and examining organs like the heart, liver, and kidneys.
浏览 Coronary 术语
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