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Related Experiment Video

Updated: Jul 4, 2026

An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices

An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices

Published on: August 25, 2023

The vanishing subaortic membrane.

Rachel Levine Berger¹, Itzhak Kronzon

¹NYU Medical Center, Non-Invasive Cardiology Laboratory, 560 First Avenue, New York, NY 10016-6502, USA.

European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology

|June 27, 2008

Summary

This summary is machine-generated.

A fixed subaortic membrane, a rare cause of left ventricular outflow tract obstruction, was identified using a novel echocardiographic technique. This method revealed an ultrasound beam

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An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices

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Published on: August 25, 2023

An Approach to Point-Of-Care Ultrasound Evaluation of the Abdominal Aorta

An Approach to Point-Of-Care Ultrasound Evaluation of the Abdominal Aorta

Published on: September 8, 2023

Area of Science:

Cardiology
Medical Imaging
Echocardiography

Background:

Fixed subaortic membranes are uncommon congenital anomalies causing left ventricular outflow tract (LVOT) obstruction.
Diagnosis typically relies on echocardiography, but visualization can be challenging.

Observation:

This case report details an unusual echocardiographic finding of a subaortic membrane.
The membrane was initially not visualized directly.
A posterior linear shadow on transesophageal echocardiography (TEE) was key to its identification.

Findings:

The linear shadow represented an ultrasound beam 'dropout' phenomenon.
This dropout artifact indirectly indicated the presence of the subaortic membrane.

Implications:

This case highlights an unusual presentation of subaortic membranes on echocardiography.
It demonstrates the diagnostic utility of recognizing ultrasound artifacts like beam dropout.
This finding may aid in the diagnosis of challenging subaortic membrane cases.