Presentation
Urinary retention.
Patient Data
Age: 65 years
Gender: Male
From the case:
Ring down artifact
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Info
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 bubbles. The tight "rungs" on the "ladder" in this artifact corresponds with ring down artifact.
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