Comparison of aortic root dimensions and geometries before and after transcatheter aortic valve implantation by 2-and 3-dimensional transesophageal echocardiography and multislice computed tomography

Ng, Arnold C. T., Delgado, Victoria, van der Kley, Frank, Shanks, Miriam, van de Veire, Nico R. L., Bertini, Matteo, Nucifora, Gaetano, van Bommel, Rutger J., Tops, Laurens F., de Weger, Arend, Tavilla, Giuseppe, de Roos, Albert, Kroft, Lucia J., Leung, Dominic Y., Schuijf, Joanne, Schalij, Martin J. and Bax, Jeroen J. (2010) Comparison of aortic root dimensions and geometries before and after transcatheter aortic valve implantation by 2-and 3-dimensional transesophageal echocardiography and multislice computed tomography. Circulation: Cardiovascular Imaging, 3 1: 94-102. doi:10.1161/CIRCIMAGING.109.885152


Author Ng, Arnold C. T.
Delgado, Victoria
van der Kley, Frank
Shanks, Miriam
van de Veire, Nico R. L.
Bertini, Matteo
Nucifora, Gaetano
van Bommel, Rutger J.
Tops, Laurens F.
de Weger, Arend
Tavilla, Giuseppe
de Roos, Albert
Kroft, Lucia J.
Leung, Dominic Y.
Schuijf, Joanne
Schalij, Martin J.
Bax, Jeroen J.
Title Comparison of aortic root dimensions and geometries before and after transcatheter aortic valve implantation by 2-and 3-dimensional transesophageal echocardiography and multislice computed tomography
Journal name Circulation: Cardiovascular Imaging   Check publisher's open access policy
ISSN 1941-9651
1942-0080
Publication date 2010-01
Sub-type Article (original research)
DOI 10.1161/CIRCIMAGING.109.885152
Volume 3
Issue 1
Start page 94
End page 102
Total pages 9
Place of publication Baltimore, United States
Publisher Lippincott Williams & Wilkins
Language eng
Formatted abstract
Background: 3D transesophageal echocardiography (TEE) may provide more accurate aortic annular and left ventricular outflow tract (LVOT) dimensions and geometries compared with 2D TEE. We assessed agreements between 2D and 3D TEE measurements with multislice computed tomography (MSCT) and changes in annular/LVOT areas and geometries after transcatheter aortic valve implantations (TAVI).

Methods and Results: Two-dimensional circular (π×r2), 3D circular, and 3D planimetered annular and LVOT areas by TEE were compared with “gold standard” MSCT planimetered areas before TAVI. Mean MSCT planimetered annular area was 4.65±0.82 cm2 before TAVI. Annular areas were underestimated by 2D TEE circular (3.89±0.74 cm2, P<0.001), 3D TEE circular (4.06±0.79 cm2, P<0.001), and 3D TEE planimetered annular areas (4.22±0.77 cm2, P<0.001). Mean MSCT planimetered LVOT area was 4.61±1.20 cm2 before TAVI. LVOT areas were underestimated by 2D TEE circular (3.41±0.89 cm2, P<0.001), 3D TEE circular (3.89±0.94 cm2, P<0.001), and 3D TEE planimetered LVOT areas (4.31±1.15 cm2, P<0.001). Three-dimensional TEE planimetered annular and LVOT areas had the best agreement with respective MSCT planimetered areas. After TAVI, MSCT planimetered (4.65±0.82 versus 4.20±0.46 cm2, P<0.001) and 3D TEE planimetered (4.22±0.77 versus 3.62±0.43 cm2, P<0.001) annular areas decreased, whereas MSCT planimetered (4.61±1.20 versus 4.84±1.17 cm2, P=0.002) and 3D TEE planimetered (4.31±1.15 versus 4.55±1.21 cm2, P<0.001) LVOT areas increased. Aortic annulus and LVOT became less elliptical after TAVI.

Conclusions: Before TAVI, 2D and 3D TEE aortic annular/LVOT circular geometric assumption underestimated the respective MSCT planimetered areas. After TAVI, 3D TEE and MSCT planimetered annular areas decreased as it assumes the internal dimensions of the prosthetic valve. However, planimetered LVOT areas increased due to a more circular geometry.
Keyword Computed tomography
Echocardiography
Transesophageal
Aortic valve
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Medicine Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 165 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 30 Apr 2013, 11:20:40 EST by Dr Chin Tse Arnold Ng on behalf of Scholarly Communication and Digitisation Service