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Traditionally, reliance has been placed on two-dimensional echocardiographic (2DE) imaging to guide recognition of the specific morphological features. Real-time 3DE can provide unique views of the left AV valve with the potential to improve understanding of valve morphology and function to facilitate surgical planning. This review illustrates the features of congenital abnormalities of the left AV valve assessed by 3DE. The similarities and differences in morphology between different lesions are described, both with respect to the valve itself and supporting chordal apparatus. The potential advantages as well as limitations of this technique in clinical practice are outlined.<\/jats:p>","DOI":"10.1530\/erp-15-0003","type":"journal-article","created":{"date-parts":[[2015,1,17]],"date-time":"2015-01-17T05:44:35Z","timestamp":1421473475000},"page":"R13-R24","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Three-dimensional echocardiography of congenital abnormalities of the left atrioventricular valve"],"prefix":"10.1186","volume":"2","author":[{"given":"Kathryn","family":"Rice","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Simpson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2015,3,1]]},"reference":[{"key":"2010019_CR1","doi-asserted-by":"crossref","first-page":"1284","DOI":"10.1016\/S0002-9149(99)80357-9","volume":"76","author":"A Banerjee","year":"1995","unstructured":"Banerjee A, Kohl T, Silverman NH 1995 Echocardiographic evaluation of congenital mitral valve anomalies in children. 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