Non-invasive and Invasive Plaque Characterisation

Inclusion Criteria: * Chest pain suggestive for myocardial ischemia for at least 30 minutes; - Electrocardiogram (ECG) with ST-segment shifts (ST-segment depression \>1 mm in at least two contiguous leads or transient ST-segment elevation \> 1mm with duration of \< 30 min in at least two contiguous leads) and/or T-wave changes (T-wave inversion \> 1.5 mm in at least three contiguous leads); - Positive hs Troponin T \> 14 ng/L or positive Troponin T \<0.01 µg/L - Clinical indication for invasive coronary angiography followed by PCI of the ischemia-related target lesion; - Informed consent. Exclusion Criteria: * Persistent ST-elevation of \>1 mm in 2 or more leads; - Need for emergency invasive coronary angiography and percutaneous coronary intervention (PCI); - Need for emergency coronary artery bypass grafting; - Presence of cardiogenic shock; - Estimated glomerular filtration rate (eGFR) \< 50 ml/min; - Known allergy to iodine contrast agents; - Cardiac rhythms other than sinus rhythm; - Inability to lay supine; - Inability tot sustain a breath-hold for 15 seconds; - Inability to provide informed consent.