The new approach propose in this protocol is based on ultrafast ultrasound and remote palpation of tissue by ultrasonic radiation pressure. Ultrafast ultrasound of biological tissues is based on an innovative ultrasound imaging approach that can image very fast soft tissue events at a rate of several thousands of frames per second and provide quantitative mapping of the elasticity of the tissues. This current project aims is to focus on myocardial rigidity in diastole to better assess the function of the heart failure.
Hospitalization in cardiology services for acute pulmonary edema during heart failure
Natriuretic peptide type B ≥35 pg/ml
Echocardiographic structural alteration
Group "preserved LVEF": Left ventricular Ejection Fraction ≥50%
Other associated lung pathology
Other heart disease
Contraindication to MRI or echocardiography gel
Pregnancy