![Appendicitis](https://ddxof.com/wp-content/uploads/2014/07/appendicitis.png)
![](https://ddxof.com/wp-content/uploads/2014/07/appendicitis-150x150.png)
Appendicitis
Non-compressible tubular structure in the RLQ of a patient with focal abdominal tenderness. >6mm in diameter.
![Common Bile Duct](https://ddxof.com/wp-content/uploads/2014/07/cbd.png)
![](https://ddxof.com/wp-content/uploads/2014/07/cbd-150x150.png)
Common Bile Duct
A tubular structure typically anterior to the portal vein without flow. Normally measures <4mm, increases by 1mm per decade after 40yrs.
![Cellulitis](https://ddxof.com/wp-content/uploads/2014/07/cellulitis.png)
![](https://ddxof.com/wp-content/uploads/2014/07/cellulitis-150x150.png)
Cellulitis
"Cobblestone" appearance of soft tissue suggesting infection/edema.
![Fetal Heart Rate](https://ddxof.com/wp-content/uploads/2014/07/fetal_hr.png)
![](https://ddxof.com/wp-content/uploads/2014/07/fetal_hr-150x150.png)
Fetal Heart Rate
Placing the M-Mode marker over the most visibly active portion of the fetal heart allows for measurement of the fetal heart rate.
![Free Fluid](https://ddxof.com/wp-content/uploads/2014/07/ff.png)
![](https://ddxof.com/wp-content/uploads/2014/07/ff-150x150.png)
Free Fluid
Free fluid in the hepatorenal recess.
![Hydronephrosis](https://ddxof.com/wp-content/uploads/2014/07/hydronephrosis.png)
![](https://ddxof.com/wp-content/uploads/2014/07/hydronephrosis-150x150.png)
Hydronephrosis
Severe hydronephrosis.
![Thoracic Aorta Aneurysm](http://i.vimeocdn.com/video/482945588_640.jpg)
![](http://i.vimeocdn.com/video/482945588_100x75.jpg)
Thoracic Aorta Aneurysm
Subxiphoid view of thoracic aorta, markedly dilated (>3cm) with thrombus.
![Pericardial Effusion](http://i.vimeocdn.com/video/482945609_640.jpg)
![](http://i.vimeocdn.com/video/482945609_100x75.jpg)
Pericardial Effusion
Mild pericardial effusion in a patient with pleuritic chest pain.
![Inferior Vena Cava](http://i.vimeocdn.com/video/482945594_640.jpg)
![](http://i.vimeocdn.com/video/482945594_100x75.jpg)
Inferior Vena Cava
IVC without significant respiratory variation.
![B-lines](http://i.vimeocdn.com/video/482945597_640.jpg)
![](http://i.vimeocdn.com/video/482945597_100x75.jpg)
B-lines
B-lines extending deep from pleura suggestive of interstitial fluid accumulation (pulmonary edema).
!["Shred" sign](http://i.vimeocdn.com/video/482946141_640.jpg)
![](http://i.vimeocdn.com/video/482946141_100x75.jpg)
"Shred" sign
Irregular, "shredded" pleural line suggestive of consolidation.
![Pneumothorax](http://i.vimeocdn.com/video/482945599_640.jpg)
![](http://i.vimeocdn.com/video/482945599_100x75.jpg)
Pneumothorax
Transition point with loss of lung sliding in a patient with a small spontaneous pneumothorax.