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The retrolenticular afterglow: an echo enhancement artifact.
Author(s) -
Ziskin M C,
LaFollette P S,
Radecki P D,
Villafana T
Publication year - 1986
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1986.5.7.385
Subject(s) - artifact (error) , echogenicity , medicine , afterglow , optics , lens (geology) , imaging phantom , echo (communications protocol) , beam (structure) , ultrasonography , physics , nuclear medicine , radiology , artificial intelligence , gamma ray burst , astrophysics , computer network , computer science
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.