Red thrombus-like appearance of protruding calcification into the lumen of the coronary artery by optical coherence tomography

M. Terashima, H. Kaneda, T. Matsubara, Takahiko Suzuki
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引用次数: 2

Abstract

Calcification is usually identified by a well-delineated, low back-scattering heterogeneous region without signal attenuation on optical coherence tomography (OCT), whereas red-thrombus is characterized as a high-backscattering protrusion with attenuation. Although the visualization of intense dorsal shadowing must be interpreted as red-thrombus according to classical OCT diagnostic criteria, thick calcification ( 1.5 mm) may also generate intense posterior shadowing, due to inability of near-infrared light penetration. In this case, OCT images suggested redthrombus while MSCT/IVUS findings demonstrated calcification (Figure 1). Nodular calcification should be taken into account to prevent stent under-expansion or coronary perforation, even in cases with redthrombus on OCT.
光学相干断层扫描显示冠状动脉腔内红色血栓样的突出钙化
钙化通常通过光学相干断层扫描(OCT)上清晰的低后向散射非均匀区来识别,而红色血栓的特征是高后向散射的衰减突出。尽管根据经典的OCT诊断标准,强烈的背侧阴影显示必须解释为红色血栓,但由于近红外光无法穿透,厚钙化(1.5 mm)也可能产生强烈的后侧阴影。在本例中,OCT图像提示红血栓,而MSCT/IVUS结果显示钙化(图1)。即使在OCT上有红血栓的病例中,也应考虑结节性钙化,以防止支架扩张不足或冠状动脉穿孔。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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