Vasospasm, Coronary

To compare clinical outcomes of myocardial infarction with non-obstructive coronary arteries (MINOCA) according to the coronary microvascular dysfunction (CMD), evaluated by optical coherence tomography (OCT), invasive and non-invasive coronary physiologic assessment.

The goal of this clinical trial is to test whether adding coronary function testing and starting targeted medical treatment for identified vasomotor disorders will also improve angina symptoms and quality of life in patients with obstructive coronary artery disease who undergo percutaneous coronary intervention. The main question it aims to answer is: Does performing coronary function testing in patients with obstructive coronary artery disease who undergo percutaneous coronary intervention lead to better relieve of angina symptoms and improvement in quality of life? Researchers will compare this group undergoing coronary function testing with a control group who will solely undergo percutaneous coronary intervention. Participants will: * Undergo percutaneous coronary intervention and coronary function testing in the intervention arm * Undergo percutaneous coronary intervention in the control arm

The goal of this observational study is to learn more about the diagnosis of coronary endothelium function and coronary vasospasm using a dedicated invasive protocol in patients who has angina without obstruction in their main heart arteries. The main question it aims to answer is the feasibility, reproducibility, and safety of this invasive protocol: Does this invasive protocol diagnose coronary endothelial dysfunction and vasospasm without issues? Participants already having invasive coronary angiogram and physiological studies will undergo additional physiological measurements during the same procedure. Participants will enrol in a symptoms and quality of life questionnaire using dedicated questionnaires and a mobile application to assess the burden of their symptoms before and after the invasive procedure and up to 12 months follow up. A subset of participants will undergo a repeat set of these measurements to assess reproducibility of the invasive protocol. A subset of the participants will also undergo a cardiac MRI to assess correlation with the invasive protocol measurements.