 The study will investigate patients with suspected Acute Coronary syndrome who have been examined and subsequently sent home from an emergency- or cardiology department without ACS or another obvious explanation. 750 patients, age 30-70 years who are included in the study: Identification of risk factors in non-cardiac chest pain patients will be offered a non-contrast CT scan with calcium score within 14 days after the hospital contact. The participants will be included in a 12 months follow up, where the result of the calcium score is not revealed neither for the patient nor the investigator. After 12 months the results of the scan is compared with the rate of cardiac events. This project is a multicenter study and recruits patients from 6 emergency - and cardiology departments in the region of Southern Denmark. 