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NDT Advance Access originally published online on July 12, 2006
Nephrology Dialysis Transplantation 2006 21(9):2668-2669; doi:10.1093/ndt/gfl319
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© The Author [2006]. Published by Oxford University Press on behalf of ERA-EDTA. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

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Email: rmcgill{at}wpahs.org

Sir,

We thank Dr Chuang and Dr Manning for their thought-provoking letter [1], in which they raise interesting points that expand upon the illustrative value of the case we presented [2]. Three-dimensional echocardiography (3DE) has shown promise as another method to avoid the geometrical modelling errors inherent in the two-dimensional echocardiography as currently available.

The intellectual exercise of subjecting magnetic resonance imaging (MRI) measurements to the same erroneous geometrical models used in conventional echocardiography is stimulating and illustrates that the independence of MRI measurements from calculations based on such geometrical assumptions is an important strength. In addition, their calculation demonstrates the inability to make meaningful comparisons between an MRI study and a preceding two-dimensional echocardiogram, as has been noted [3]. Undoubtedly, dialysis patients would be well served by more accurate depiction of cardiac anatomy. An optimal future will require expansion of both MRI and 3DE beyond current limited availability.

Conflict of interest statement. None declared.

Robert W. W. Biederman, Richard J. Marcus and Rita L. McGill

Divisions of Cardiology and Nephrology Allegheny General Hospital West Penn Allegheny Health System Pittsburgh, PA, USA

References

  1. Chuang ML, Manning WJ. Pitfalls in comparison of left ventricular mass measurements by echocardiography and cardiovascular magnetic resonance imaging. Nephrol Dial Transplant 2006
  2. Getts RT, Hazlett SM, Sharma SB et al. Regression of left ventricular hypertrophy after bilateral nephrectomy. Nephrol Dial Transplant 2006; 21: 1089–1091[Free Full Text]
  3. Bellenger NG, Burgess MI, Ray SG et al. Comparison of left ventricular ejection fraction and volumes in heart failure by echocardiography, radionuclide ventriculography and cardiovascular magnetic resonance; are they interchangeable?. Eur Heart J 2000; 21: 1387–1396[Abstract/Free Full Text]

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This Article
Right arrow Extract Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
21/9/2668-a    most recent
gfl319v1
Right arrow Alert me when this article is cited
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Right arrow Articles by Biederman, R. W. W.
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