Background: Coronary calcification has been linked to cardiovascular events. We developed and validated an algorithm to automatically quantify coronary calcifications on intravascular ultrasound (IVUS). We aimed to assess the prognostic value of an IVUS-calcium score (ICS) on patient-oriented composite endpoint (POCE). Methods: We included patients that underwent coronary angiography plus pre-procedural IVUS imaging. The ICS was calculated per patient. The primary endpoint was a composite of all-cause mortality, stroke, myocardial infarction, and revascularization (POCE). Results: In a cohort of 408 patients, median ICS was 85. Both an ICS ≥ 85 and a 100 unit increase in ICS increased the risk of POCE at 6-year follow-up (adjusted hazard ratio (aHR) 1.51, 95%CI 1.05–2.17, p value = 0.026, and aHR 1.21, 95%CI 1.04–1.41, p value = 0.014, respectively). Conclusions: The ICS, calculated by a validated automated algorithm derived from routine IVUS pullbacks, was strongly associated with the long-term risk of POCE. Graphical abstract: [Figure not available: see fulltext.].

Automated quantification, Coronary artery disease, Coronary calcification, Intravascular ultrasound, Prognosis
dx.doi.org/10.1007/s12265-021-10103-1, hdl.handle.net/1765/135170
Journal of Cardiovascular Translational Research
Department of Cardiology

Neleman, T. (Tara), Liu, S. (Shengnan), Tovar Forero, M.N. (Maria N.), Hartman, E.M.J, Ligthart, J.M.R, Witberg, K.Th, … Daemen, J. (2021). The Prognostic Value of a Validated and Automated Intravascular Ultrasound-Derived Calcium Score. Journal of Cardiovascular Translational Research. doi:10.1007/s12265-021-10103-1