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J Thorac Cardiovasc Surg 2005;129:1194-1195
© 2005 The American Association for Thoracic Surgery
Letters to the Editor |
a Department of Cardiothoracic Surgery John Radcliffe Hospital, Oxford, United Kingdom
b Centre for Functional MRI of the Brain, John Radcliffe Hospital, Oxford, United Kingdom
| The first 20% of the full text of this article appears below. |
We thank Motallebzadeh and Jahangiri for their interest in our article.
The advantages of multirange, multifrequency transcranial Doppler technique are, respectively, rejection of artifacts and differentiation between gaseous and solid microemboli. This is of particular relevance because automatic rejection of artifacts significantly reduces bias in the interpretation of high-intensity transient signals and avoids interobserver variability, whereas discrimination between solid
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