Mitral valve anatomy: pre-procedural screening and imaging techniques.

Mitral regurgitation is a source of significant morbidity and mortality with growing prevalence in an increasingly ageing population. The development of reparative percutaneous techniques allows offering treatment to patients ineligible for surgery. The mitral valve is a complex structure and these procedures are limited by anatomical variability and technical complexity. The most established mitral valve repair technique currently is the MitraClip, which requires a careful preoperative evaluation of the mitral valve apparatus to assess the patient's suitability for the intervention, where echocardiography plays an essential role.