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The retrolenticular afterglow: an echo enhancement artifact.

作者信息

Ziskin M C, LaFollette P S, Radecki P D, Villafana T

出版信息

J Ultrasound Med. 1986 Jul;5(7):385-9. doi: 10.7863/jum.1986.5.7.385.

DOI:10.7863/jum.1986.5.7.385
PMID:3522929
Abstract

A mathematical model for a sonogram containing a circular object with a sonic speed less than that of its surroundings was constructed. The circular object acts as a lens to the ultrasound beam, which explains the refractive artifacts often observed. An unexpected artifact is also predicted, a region of increased echogenicity, which the authors named the retrolenticular afterglow, since it occurs behind a lens-like structure. An experiment was designed to show the appearance of this artifact occurring distal to an ethyl alcohol-filled cylindrical well in a tissue equivalent phantom.

摘要

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