Prospective Data Collection of IVMRI Cases

Inclusion Criteria: * An adult patient ≥ 18 years old. * The patient, or legal guardian, has been informed of the nature of the study, agrees to its provisions, and has sign the approved informed consent. * The patient and the treating physician agree to attend the follow-ups as defined in the study protocol. * Indication for diagnostic and/or interventional procedure. * Lesions in a native vessels where IVMRI interrogation may provide additional information beyond angiography and other diagnostic tools. Exclusion Criteria: * Culprit lesions within 48 hours following STEMI. * Tortuous vessels, calcified or thrombotic lesions. * Significant stenosis of an unprotected left main coronary artery. * IVMRI interrogation of an unprotected left main coronary artery. * Patients with pacemaker or cardioverter defibrillator. * The patient is suffering from transplant mediated coronary artery disease.