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European Journal of Echocardiography Advance Access published online on February 20, 2008
European Journal of Echocardiography, doi:10.1093/ejechocard/jen008
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Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2008. For permissions please email: journals.permissions@oxfordjournals.org

Multiplanar review analysis of three-dimensional echocardiographic datasets gives new insights into the morphology of subaortic stenosis

Tara Bharucha1, Siew Yen Ho2 and Joseph J. Vettukattil1,*

1 Department of Paediatric Cardiology, Wessex Congenital Cardiac Centre, Southampton University NHS Trust, Tremona Road, Southampton SO16 6YD, UK
2 National Heart and Lung Institute, London SW3 6LY, UK

Received 14 September 2007; accepted after revision 7 November 2007.

* Corresponding author. Tel: +44 2380 798825; fax: +44 2380 794526. E-mail address: joseph.vettukattil{at}suht.swest.nhs.uk


  Abstract

Aims: Associated left ventricular structures may play a role in progression and recurrence of discrete subaortic stenosis. The availability of a new 3D echocardiography tool, multiplanar review (MPR), allows comprehensive analysis of datasets in infinite planes, and detailed examination of anatomy. We sought to evaluate the role of MPR in defining the morphology of subaortic stenosis.

Methods: Consecutive patients underwent detailed 2 and 3D echocardiographic examination using MPR.

Results: Sixteen patients aged 0.7–15.9 years (median 4.57) with diagnosis as follows: isolated subaortic stenosis in nine, additional defects in seven (coarctation of aorta, VSD, mitral, or aortic stenosis). Position and extent of subaortic stenosis was clearly described by multiplanar revew in all patients. Additional MPR findings were: abnormalities of mitral valve leaflet or chordal apparatus attachments (14 patients), abnormal ventricular muscle band (11), abnormal increased aorto-mitral separation (two). The aortoseptal angle was significantly decreased in subaortic stenosis, mean 141 ± 12°, vs. normal subjects, mean 153 ± 6°, P = 0.02. Surgical findings correlated well with MPR findings.

Conclusions: MPR analysis of 3D datasets is a sensitive and accurate mode for delineation of morphological details of discrete subaortic stenosis, providing additional information to 2D echocardiography.

Keywords: Subaortic stenosis; 3D echocardiography


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