Ring down artifact

Case contributed by Dr Matt A. Morgan


Urinary retention.

Patient Data

Age: 60-65Y
Gender: Male
Annotated image

The image is obtained from a transrectal ultrasound of the prostate. The patient has a Foley catheter in place and the irregular echogenic region in the center of the image is a small amount of air trapped in the catheter.

A tight reverberation artifact occurs behind the air bubles. The tight "rungs" on the "ladder" in this artifact corresponds with ring down artifact.

PlayAdd to Share

Case information

rID: 48188
Published: 23rd Sep 2016
Last edited: 16th Jul 2018
System: Urogenital
Inclusion in quiz mode: Included

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.