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Diagnostic ultrasound ( PDFDrive )

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APPENDIX Ultrasound Artifacts: A Virtual Chapter

e9

Comet-Tail Artifact

Comet-tail artifact is a type of reverberation artifact. 8 he

repetitive relections occur within very small structures, such as

tiny cysts in the case of von Meyenburg complexes and tiny

crypts in the wall of the gallbladder in the case of adenomyomatosis.

Accordingly, the reverberated echoes may not be

individually visible. he tapered, comet-tail appearance is due

to the decreasing amplitude of each reverberation as a result of

beam attenuation.

Click here to see the explanatory video of comet-tail artifact

in adenomyomatosis (Video A.8).

FIG. A.17 Comet-Tail Artifact in Association With Adenomyomatosis. This is felt to be due to cholesterol crystals within the prominent

Rokitansky-Aschoff sinuses. 3 (See Chapter 6, Fig. 6.45.)

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