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Transvascular and intracardiac two-dimensional echocardiography
J B Seward1, B K Khandheria, C G McGregor
1Cardiology Clinic, Mayo Clinic and Mayo Foundation, Rochester, MN 55905.
Echocardiography (Mount Kisco, N.Y.)
|June 8, 1990
Summary
This study explores transvascular and intracardiac ultrasound imaging using a novel catheter-based approach. Invasive ultrasound successfully visualized cardiac, vascular, and abdominal anatomy in pigs, demonstrating feasibility for new diagnostic applications.
Area of Science:
- Medical Imaging
- Cardiovascular Ultrasound
- Minimally Invasive Procedures
Background:
- Advancements in ultrasound technology enable invasive imaging modalities.
- Transesophageal and catheter-based ultrasound have expanded diagnostic capabilities.
Purpose of the Study:
- To investigate the feasibility of transvascular and intracardiac ultrasound imaging.
- To explore a new application of invasive ultrasound using esophageal probes.
Main Methods:
- An experimental study was conducted on six pigs.
- A 7-mm, 5-MHz esophageal ultrasound probe was introduced into the abdominal aorta and inferior vena cava.
- Imaging potential was assessed through transvascular and intracardiac approaches.
Main Results:
- Transvascular imaging from the aorta visualized cardiac structures, neural canal, and peritoneal anatomy.
- Advancing the probe into the left ventricle provided images of cardiac valves and chambers.
- Imaging via vena cava visualized aorta, neural canal, pancreas, and liver.
- Intracardiac imaging visualized left heart structures from the right heart and vena cava.
Conclusions:
- Transducer-tipped catheters show potential for transvascular and intracardiac imaging.
- This in vivo study demonstrates the feasibility of this novel invasive ultrasound technique.