Real-time three-dimensional transesophageal echocardiography--an initial experience

Area of Science:

• Cardiovascular Imaging
• Medical Ultrasound Technology

Background:

• Echocardiography (echo) has evolved significantly, with 3D echo offering enhanced visualization but historically limited by artifacts and processing time.
• Recent advancements include a real-time 3D transesophageal (TE) echo probe, overcoming previous limitations of transthoracic studies.

Purpose of the Study:

• To describe initial experiences with the new real-time 3D TE echo probe.
• To assess its capability in visualizing cardiac structures.
• To evaluate its advantages and limitations.

Main Methods:

• 103 transesophageal studies were conducted using an iE33 ultrasound system with an X7-2t probe.
• 3D images were acquired and exported for offline review and post-processing using QLAB software.
• Successful intubation was achieved in all patients.

Main Results:

• 3D images were obtained in 73 studies, primarily for atrial septal defect (ASD) evaluation and mitral valve disease/prostheses assessment.
• The technique provided valuable insights into mitral valve pathology and anatomy.
• Clear visualization of the interatrial septum was achieved, aiding defect identification, though some image dropouts occurred.

Conclusions:

• Real-time 3D TE echo allows clear visualization of mitral valve components and anatomical relationships, proving highly beneficial for preoperative evaluation.
• The technology shows promise for ASD closure guidance.
• Imaging of anterior cardiac structures (aortic, pulmonary, tricuspid valves) remains suboptimal and requires improvement.