Experimental: Coronary computed tomopraphic angiography

Patients randomized to strategy including early CCTA will receive standard care according to responsible physician and referred to a CCTA as soon as possible, preferably within 24 hours, but not later than within 21 days. Local scanning protocols can be used on ≥64-slice multi-detector CT scanners able to perform ECG-gated coronary angiography.~The coronary angiography will be classified as normal (or near normal) or as having atherosclerosis (CAD). The report will also classify each vessel (left main, prox LAD, mid or distal LAD, LCX and RCA regarding degree of stenosis (no stenosis, 0-49%, ≥50%, or not possible to estimate because of calcification or technical reason).~The result will be presented to the responsible physician as soon as possible and who will plan further care of the patients.

No_intervention: No Coronary computed tomopraphic angiography

Patients randomized to a strategy not including early CCTA will receive further care (including examinations) according to responsible physician but not include early CCTA. These patients will often undergo a non-invasive functional test, such as Exercise-ECG, stress echocardiography or nuclear imaging according to local routines, but not always.~Regardless of diagnostic strategy, the responsible physician is encouraged to initiate secondary prevention measures if the investigations indicate signs of CAD, including medication with aspirin and statins.