光学相干断层成像技术在冠状动脉粥样硬化性心脏病介入治疗中的应用

Application of Optical Coherence Tomography in Intervention of Coronary Atherosclerotic Heart Disease

光学相干断层成像(OCT)是将光学技术与超灵敏探器合为一体,应用计算机进行图像处理的断层成像诊断技术。它采用低相干的近红外光线从组织反射回来的不同光学特征进行组织分析成像,成像速度快,其分辨率接近组织学水平,是目前分辨率最高的血管腔内成像技术。近年来研究显示,OCT较血管内超声可更清晰地显示内膜下的病变或斑块,有利于临床对易损斑块、血栓、钙化、夹层、支架及支架表面的内膜增生和支架内再狭窄的判断,OCT还能通过钙化层对钙化后的组织清晰显像。

Optical coherence tomography is a diagnosis technology applying computer for image processing with the combination of optical technology and ultra sensitive detector.It uses the low coherence near infrared light which presents different optical characteristics reflected from different tissues for tissue analysis imaging,featured with fast speedand near the histological level resolution,which is so far the intravascular imaging technology with the highest resolution.Recent studies have shown,OCT can clearly show the subintimal lesions or plaques,which helps for the identification of vulnerable plaque,thrombus,calcification,sandwich,stent intimal hyperplasia and restenosis,and it can also pass through the calcified layer to have a clear imaging of the calcified tissues.