Technical Performance of a New Cardiac Technology "IQ-SPECT" Applied to SCINTI-CT Myocardial Imaging With 99mTc-Sestamibi in Coronary Patients

Inclusion Criteria: * age over 18 years (except major patients under guardianship) * free and informed consent signed * written and spoken French * beneficiaries of the social security system * coronary insufficiency detection needed for patients with signs or symptoms suggestive of coronary insufficiency; or in symptomatic patients, but with a high risk of coronary heart disease: diabetes and / or with multiple cardiovascular risk factors and / or having a peripheral vascular disease Exclusion Criteria: * Patients with a recent history (\<21 days) acute coronary failure (myocardial infarction, unstable angina); * Patients with an irregular heartbeat, because of the impossibility of achieving a good quality ECG synchronization (atrial fibrillation, ventricular extra-systole or supraventricular over 25% of cardiac cycles); * Patients with a pacemaker with a permanent electro-drive at rest; * Patients with non-ischemic heart disease: primitive dilated cardiomyopathy, severe hypertrophic cardiomyopathy, severe valvular cardiomyopathy (aortic stenosis, aortic or mitral leakage grade\> 2), congenital heart disease; * Patients with severe extra-cardiac disease may interfere with treatment decisions (cancer, severe hepatic or renal impairment); * Major patients under guardianship; * Pregnant or lactating women; * Women in age and condition of childbearing; * Patients unable to understand the purpose of the study. Cons-indications to physical stress test: * Uncontrolled heart failure, * Pulmonary embolism, phlebitis evolution, * Myocarditis, pericarditis, endocarditis evolving * Physical disability, * Thrombus * Asthma * contra-indication for exercise testing as dipyridamole: * Severe Asthma