Ultra-sensitive Magnetocardiography in the Accurate Identification of Severe Coronary Lesions and Myocardial Necrosis
Magnetocardiography (MCG) is a promising noninvasive and accurate method for detecting myocardial ischemia. Although progress has been made in this area, there is a lack of studies using up-to-date examination instruments for the calibration of MCG analysis. This is a prospective single-center study aiming to build accurate analytical models of MCG to detect coronary lesions and myocardial necrosis. Coronary lesions are measured by coronary angiography (CAG) or coronary CTA, and are defined by both the stenosis degree and the computer-simulated fraction flow reserve. Myocardial necrosis is examined and quantified by cardiac MR. Healthy volunteers, chest pain patients who will receive CAG or CTA examination, and patients with acute myocardial infarction will be enrolled in this study.
• Age 18-79 years old;
• No history of cardiovascular disease (coronary heart disease, structural heart disease, arrhythmia, heart failure, stroke, pulmonary embolism, aortic dissection, etc.), no cardiovascular risk factors (hypertension, diabetes, hyperlipidemia). For people over 65 years old, those with hypertension or hyperlipidemia, but with well-controlled blood pressure and lipid levels, taking no more than 2 drugs, and echocardiography showing no left ventricular hypertrophy, can be included;
• The electrocardiogram is normal, and the cardiac ultrasound is basically normal in the past 1 year (mild valvular regurgitation can be included).
• Sign the informed consent.
• Age 18-79 years old;
• Those with chest pain symptoms, diagnosed or highly suspected by the attending doctor or above as stable angina pectoris (SA), unstable angina pectoris (UA), non-ST segment elevation myocardial infarction (NSTEMI), ST segment elevation myocardial infarction (STEMI), and plan to receive CAG or coronary CTA;
• Sign the informed consent.
• Age 18-79 years old;
• The attending doctor or above has diagnosed the patient as acute myocardial infarction (NSTEMI, STEMI), the condition of whom is relatively stable, and CMR examination is feasible after evaluation.
• Sign the informed consent.