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Erratum

Letters are published at the discretion of the Editor and are subject to editing.

Letters to the Editor must not be more than two double-spaced typewritten pages. One or two figures may be included. Abbreviations should not be used. Limit the number of authors to four, or we will list only the first three and add "and colleagues" to the end of the list. See Author Guidelines.

Material being submitted or published elsewhere should not be duplicated in letters, and authors of letters must disclose financial associations or other possible conflicts of interest.

Letters concerning a paper published in the AJR may be sent to the author of the paper for a reply to be published in the same issue.

Opinions expressed in the Letters to the Editor do not necessarily reflect the opinions of the Editor.

An error occurred in the article "Twinkling Artifact on Color Doppler Sonography: Dependence on Machine Parameters and Underlying Cause" (AJR 2002;180:215-222). "Assuming a focal length of 1" should have been "assuming an F# of 1." We regret the error.

This change has been made in AJR online.

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This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Search for Related Content Social Bookmarking                      What's this? Hotlight (NEW!) What's Hotlight?