 Only around 20 of all patients seen in hospital with suspected Acute Coronary Syndrome will have Acute Myocardial Infarction. However, several studies indicate that patients where ACS had been excluded by conventional methods sustain a higher cardiac morbidity and mortality than the background population. Not all of these patients can be identified by traditional risk factors such as cholesterol, hypertension, and diabetes or with conventional methods such as ECG, troponin and clinical symptoms. Non-Contrast Cardiac-CT measures the amount of calcification in the coronary arteries and might be a useful addition in predicting future cardiac events in this patient group. The aim of this study is through a double-blinded study to determine whether non-contrast CT scan with calcium score can be used to identify patients at increased risk of death and cardiac event within the following 12 months after an acute admission where troponin measurements were normal. 