Quantitative analysis of intracoronary optical coherence tomography measurements of stent strut apposition and tissue coverage

Optical Coherence Tomography Guided Percutaneous Coronary Intervention With Nobori Stent Implantation in Patients With Non–ST-Segment–Elevation Myocardial Infarction (OCTACS) Trial

“…8,9 Optical coherence tomography (OCT) is a high-resolution intravascular imaging modality that enables in vivo evaluation of the immediate stenting result and the vascular healing pattern including strut coverage at follow-up. 4,10,11 Some procedural factors can be modified using OCT guidance, including strut apposition and stent expansion, potentially leading to a decrease in the proportion of uncovered struts at follow-up.…”

Development of a Novel Prohealing Stent Designed to Deliver Sirolimus From a Biodegradable Abluminal Matrix

“…Struts were classified as protruding when strut apposition does not fall within stent ring (embedded) but not malapposed (when apposition distance is Ͼ20 m). 16 …”

Comparison of Neointimal Coverage of Sirolimus-Eluting Stents and Paclitaxel-Eluting Stents Using Optical Coherence Tomography at 9 Months After Implantation

“…For neointimal hyperplasia (NIH) thickness, the distance between the endo-luminal surface of the strut reflection and the vessel wall was measured by prolonging and joining the contours of the wall on either side of the strut shadow with a measurement line as perpendicular as possible to the strut and vessel wall. 11,13 NIH thickness inside every strut was measured and when there was no definite neointima over the stent strut, it was defined as an uncovered strut. 13 The stent and lumen areas were measured by manual trace and the percentage of the NIH area was calculated as: NIH area (%) = ([stent area -lumen area] / stent area) ×100.…”

“…11,13 NIH thickness inside every strut was measured and when there was no definite neointima over the stent strut, it was defined as an uncovered strut. 13 The stent and lumen areas were measured by manual trace and the percentage of the NIH area was calculated as: NIH area (%) = ([stent area -lumen area] / stent area) ×100. When the strut was not fully attached to the vessel wall by visual estimation, the position of the stent strut to the vessel wall was measured by magnifying the individual stent strut to maximize accuracy.…”