Weidinger F
Abteilung für Kardiologie, Universitätsklinik für Innere Medizin II, Wien.
Acta Med Austriaca. 1992;19(5):119-24.
Intravascular ultrasound is a new imaging modality which allows the visualization of the vessel wall in vivo and could thus become an important adjunct to conventional angiography. Using miniature high-frequency transducers mounted at the tip of flexible catheters, high-resolution cross-sectional images are created and displayed in real-time. Several investigations have shown good correlations between ultrasound and histologic or angiographic techniques for the measurement of cross-sectional dimensions. Atherosclerotic lesions can be characterized by their differences in echo-density as calcified, fibrous or lipoid. Initial clinical studies have demonstrated the possibility to detect acute changes, such as dissections, following PTCA and other interventions. Several potential clinical applications are being discussed, where intravascular ultrasound may yield valuable information in addition to that provided by angiography. If some important current limitations can be overcome, this method may add a new dimension to invasive vascular diagnostics.
血管内超声是一种新的成像方式，它能够在体内可视化血管壁，因此可能成为传统血管造影的重要辅助手段。使用安装在柔性导管尖端的微型高频换能器，可以创建并实时显示高分辨率的横截面图像。多项研究表明，在测量横截面尺寸方面，超声与组织学或血管造影技术之间具有良好的相关性。动脉粥样硬化病变可根据其回声密度的差异分为钙化、纤维或脂质病变。初步临床研究已证明，在经皮腔内冠状动脉成形术（PTCA）和其他干预后，能够检测到诸如夹层等急性变化。目前正在讨论血管内超声的一些潜在临床应用，除血管造影提供的信息外，血管内超声可能还会产生有价值的信息。如果能够克服当前一些重要的局限性，这种方法可能会为侵入性血管诊断增添新的维度。
