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Updated: Oct 22, 2025

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
Published on: October 28, 2020
Complex and multilevel left ventricular outflow tract obstruction: What can 3D echocardiography add?
Hoda Abdelgawad1, Mahmoud Shehata2, Mahmoud Abdelnabi3,4
1Cardiology Department, Faculty of Medicine, Alexandria University, Champollion Street, Khartoom Square, Qism Bab Sharqi, Alexandria, Egypt. hoda.abdelkhalek@alexmed.edu.eg.
Background:
Subaortic obstruction by a membrane or systolic anterior motion of the mitral valve leaflets is usually suspected in young patients, especially if the anatomy of the aortic valve is not clearly stenotic and unexplained left ventricular hypertrophy exists in the context of high transaortic gradients.
Main Body:
In certain circumstances, some patients show both aortic and subaortic stenotic lesions of variable severity. Doppler echocardiography can help in grading severity in the case of single-level obstruction but not in patients with multilevel obstruction where the continuity equation is of no value. Three-dimensional (3D) echocardiography allows "en-face" visualization of each level of the aortic valve and subaortic tract; in addition, direct planimetry of the areas can be done using multiplanar reformatting.
Conclusions:
Accordingly, 3D echocardiography plays a crucial role in the assessment in patients with multilevel left ventricular outflow tract obstruction as it can accurately delineate the location and size, and severity of the stenosis.
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