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Journal of Ultrasound in Medicine, Vol 5, Issue 7 385-389, Copyright © 1986 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

The retrolenticular afterglow: an echo enhancement artifact

M. C. Ziskin, P. S. LaFollette Jr, P. D. Radecki and T. Villafana

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.


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J. Huang, J. K. Triedman, N. V. Vasilyev, Y. Suematsu, R. O. Cleveland, and P. E. Dupont
Imaging Artifacts of Medical Instruments in Ultrasound-Guided Interventions
J. Ultrasound Med., October 1, 2007; 26(10): 1303 - 1322.
[Abstract] [Full Text] [PDF]


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Copyright © 1986 by the American Institute of Ultrasound in Medicine.