Helium-free Magnetocardiography Guided Therapy for Stable Coronary Artery Disease - A Randomized Controlled Trial

Inclusion Criteria: 1. Age 18-80 years, regardless of gender. 2. Patients with stable coronary artery disease (CAD). 3. Coronary computed tomography angiography (CCTA) shows at least one major coronary vessel (diameter ≥2.5 mm) with 50-90% stenosis. Patients with 50-69% stenosis must have typical or atypical angina; for those with 70-90% stenosis, the presence of chest pain symptoms is not required. \*Note: Chest pain is characterized by the following three features:\* \*(1) Chest discomfort lasting less than 15 minutes;\* \*(2) Precipitated by physical exertion or emotional stress;\* \*(3) Relieved by rest or nitrates.\* \*Based on these, angina is classified as:\* * \*Typical angina: all 3 features are present;\* * \*Atypical angina: 2 features are present;\* * \*Non-anginal chest pain: 1 or no feature is present.\* 4. Willing to participate in the study and provide written informed consent. Exclusion Criteria: 1. Previous myocardial infarction, PCI, CABG, or coronary angiography indicating stenosis ≥50% in a major vessel. 2. CCTA indicating left main coronary artery stenosis \>50% and/or three-vessel disease. 3. History of cardiac dysfunction (≥ NYHA Class III), severe congenital heart disease, valvular heart disease, or cardiomyopathy. 4. Complex arrhythmias, such as frequent atrial premature beats, ventricular premature beats, atrial fibrillation, atrial flutter, etc. 5. History of metal implant placement (including mechanical valves, pacemakers, orthopedic internal fixation plates, drug pumps, etc.). 6. Claustrophobia. 7. Severe thoracic deformity. 8. Active bleeding. 9. Any disease with an expected survival of less than 1 year. 10. Completion of any of the following tests prior to enrollment: exercise ECG, stress echocardiography, stress SPECT, or stress CMR. 11. Any other condition where the investigator considers the patient unsuitable for this study.