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Intracranial carotid artery calcification (ICAC), a potential marker for arteriosclerosis, is a risk factor for stroke but their roles in ICH is unknown. We aimed to investigate the prevalence and morphological subtypes of ICAC and their associations with long-term vascular events in ICH survivors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and methods<\/jats:title>\n                    <jats:p>Survivors of spontaneous ICH treated at a single center in Taiwan were included. ICAC was assessed by non-contrast CT; morphology was evaluated and categorized as intimal, internal elastic lamina (IEL), or mixed subtype. Patients were followed up for two years. Associations between calcification subtypes and follow-up events (stroke, cardiovascular event, death) were explored using multivariable Cox regression models.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Overall, 462 (80.1%) survivors of ICH had ICAC\u2014223 (38.6%) were categorized as IEL calcification, 216 (37.4%) as intimal calcification, and 23 (4.0%) as mixed type calcification\u2014and 115 patients (19.9%) had no calcification. Patients with IEL calcification were older than patients with intimal or no calcification (p\u2009&amp;lt;\u20090.001). Age (p\u2009&amp;lt;\u20090.001), diabetes (p\u2009=\u20090.010), and reduced renal function (p\u2009=\u20090.001) were independently associated with IEL calcification. During 2-years of follow-up, IEL calcification was not associated with a significant difference in the risk of recurrent ICH (HR=2.8 [0.8\u20129.7]), but was associated with higher risks of incident ischemic stroke (HR\u2009=\u20099.0 [1.0\u201277.4]), vascular mortality (HR\u2009=\u200913.6 [1.7\u20121772.4], and all-cause mortality (HR\u2009=\u200913.9 [1.8\u2012105.8]).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>ICAC is common among ICH survivors and the subtype of IEL calcification may potentially have prognostic value for long-term vascular events.<\/jats:p>\n                  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