Comparison of dual-source computed tomography for the quantification of the aortic valve area in patients with aortic stenosis versus transthoracic echocardiography and invasive hemodynamic assessment

The American Journal of Cardiology
D RopersStephan Achenbach

Abstract

We compared the measurements of the aortic valve area (AVA) using dual-source computed tomography (DSCT) in patients with mid to severe aortic stenosis to measurements using transthoracic echocardiography (TTE) and invasive hemodynamic assessment. A total of 50 patients (mean age 73 +/- 10 years) with suspected aortic stenosis were included. The computed tomographic data were acquired using DSCT with standardized scan parameters (2 x 64 x 0.6 mm collimation, 330-ms rotation, 120-kV tube voltage, 560 mA/rot tube current). After injection of 35 ml contrast agent (flow rate 5 ml/s), a targeted volume data set, ranging from the top of the leaflets to the infundibulum, was acquired. Ten cross-sectional data sets (slice thickness 1 mm, no overlap, increment 0.6 mm) were reconstructed during systole in 5% increments of the R-R interval. The AVA determined in systole by planimetry was compared to the calculated AVA values using the continuity equation on TTE and the Gorlin formula on catheterization. DSCT allowed the planimetry of the AVA in all patients. The mean AVA using DSCT was 1.16 +/- 0.47 cm(2) compared to a mean AVA of 1.04 +/- 0.45 cm(2) using TTE and 1.06 +/- 0.45 cm(2) using catheterization, with a significant correlation b...Continue Reading

References

May 1, 1989·The American Journal of Cardiology·R DanielsenH Vik-Mo
Nov 1, 1994·Journal of the American College of Cardiology·I G BurwashC M Otto
Dec 13, 2005·European Radiology·Thomas G FlohrBernd M Ohnesorge
Jan 24, 2006·European Journal of Radiology·Stephan AchenbachKatharina Anders
Apr 4, 2006·Journal of the American College of Cardiology·Gudrun M FeuchtnerSilvana Müller
Oct 4, 2006·European Heart Journal·Erik BouvierAlain Cohen-Solal
Jun 21, 2007·AJR. American Journal of Roentgenology·Gudrun M FeuchtnerWolfgang Dichtl
Dec 25, 2007·Journal of the American College of Cardiology·Ulrike RopersStephan Achenbach

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Citations

Apr 30, 2011·Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance·Julio GarciaPhilippe Pibarot
May 3, 2011·Circulation Journal : Official Journal of the Japanese Circulation Society·Sei KomatsuKazuhisa Kodama
Feb 4, 2014·Scientifica·Gudrun Feuchtner
Mar 17, 2015·JACC. Cardiovascular Imaging·Frank A Flachskampf
Nov 6, 2010·Journal of Cardiovascular Computed Tomography·Tobias Pflederer, Stephan Achenbach
Sep 15, 2012·JACC. Cardiovascular Imaging·Stephan AchenbachJagat Narula
Jul 9, 2011·Circulation. Cardiovascular Imaging·Bridget O'BrienMilind Y Desai
May 28, 2017·The International Journal of Cardiovascular Imaging·Matthias EberhardThi Dan Linh Nguyen-Kim
May 31, 2020·Clinical Radiology·T K Mittal, N Marcus

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