Study of Degenerative Mitral Regurgitation Using Three‐Dimensional Echocardiography and EchoPAC GE Health Care Software 4D Auto MVQ: Comparison Between Transthoracic and Transesophageal Examination

Preoperative echocardiographic assessment is critical for patients with severe degenerative mitral regurgitation to ensure personalized surgical mitral valve repair. This study aimed to compare the diagnostic accuracy of three-dimensional transthoracic echocardiography (3D TTE) and three-dimensional transesophageal echocardiography (3D TEE) in identifying valvular lesions, using surgical findings as the reference. Additionally, we evaluated whether annular dimensional parameters derived from TTE and TEE, using dedicated 3D software, could confirm whether 3D TTE alone offers a comprehensive preoperative evaluation.