The lumen contour is drawn by semi-automated detection using QCU-CMS software, following the endoluminal contour of the neointima with manual correction wherever required. In case of thrombus with low attenuation, the lumen contour can still be drawn. In case of high attenuation, the lumen contour was extrapolated when the lumen contour was visible in at least three quadrants. The scaffold area was measured by joining the middle points of the signal poor core of the abluminal side of the struts if at least one strut was clearly visible in every quadrant. Distal and proximal reference area and scaffold expansion were calculated as previously reported by the MUSIC (Multicenter Ultrasound Stenting in Coronaries) investigators.(5) The neointimal thickness is measured from the abluminal border of the black strut core to the lumen. Uncovered struts are defined in the absence of a homogenous coverage by neointima. If the apposed struts is not covered by neointima but rather by irregular tissue, struts are categorized as "apposed uncovered with superimposed thrombus". If the coverage of apposed struts cannot be assessed owing to the presence of attenuating thrombus precluding the evaluation of neointima, the struts were categorized as "apposed possibly uncovered". Malapposed struts were defined as struts where the abluminal surface was clearly separated from the vessel wall. Incomplete scaffold apposition (ISA) distance was measured from the abluminal border of the strut core to the vessel wall. If malapposed struts are partially or completely surrounded by thrombus, struts were regarded as malapposed with thrombus. The area between the backside of the struts and the vessel wall was measured as ISA area, while the neointimal area is measured as scaffold area - (lumen area - ISA area). Intracoronary thrombus was identified as any irregular mass inside the lumen, with a sharp border and various degrees of attenuation.