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QUIZ
Year : 2011 | Volume
: 5
| Issue : 4 | Page : 447
Guess what?
Ahmed Thallaj
Department of Anesthesia, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia
Correspondence Address:
Ahmed Thallaj
Department of Anesthesia, College of Medicine, King Saud University, Riyadh
Kingdom of Saudi Arabia
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/1658-354X.87285
| Date of Web Publication | 8-Nov-2011 |
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How to cite this article:
Thallaj A. Guess what?. Saudi J Anaesth 2011;5:447 |
Question:
Short axis sonographic view of the supraclavicular area with color flow mode to visualize the subclavian artery (white arrow) anterior to the pleura (green arrow), another vascular structure appeared posterior to the pleura; what could it be? [Figure 1]. | Figure 1: Subclavian artery (white arrow); Pleura (green arrow); Artifact (blue arrow)
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Answer:
This is not a real structure.
The physical phenomena explaining this artifact: Some ultrasound waves is trapped within the subclavian artery then return back to the probe with delay. Tthe ultrasound microprocessor will identify the delayed waves as another structure and it will duplicate the image.
[Figure 1]
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