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CT ABDOMEN ANATOMY USC/SOM Department of Radiology Kirk Peterson, MD Class of 2004. In this axially CT sequence, we will follow the esophagus caudally until it joins the stomach and eventually the stomach will transition into the duodenum. It is best to few this sequence in the movie mode.

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ct abdomen anatomy usc som department of radiology kirk peterson md class of 2004
CT ABDOMEN ANATOMY

USC/SOM

Department of Radiology

Kirk Peterson, MD

Class of 2004

slide2
In this axially CT sequence, we will follow the esophagus caudally until it joins the stomach and eventually the stomach will transition into the duodenum. It is best to few this sequence in the movie mode.
  • Images are viewed as looking
  • From the feet
  • Right Left
slide3

The air filled density of the esophagus is outlined in this image.

You can follow this down in the next several sequences.

slide6

The reason the esophagus appears solid in this image is because this is likely the gastroesophageal junction’s muscular sphincter

slide8

If you look closely, you can appreciate the surface texture of

the esophagus joining the cardiac portion of the stomach

.
slide15

You can begin to see the pancreas emerging just posterior

to the stomach. The pancreas has about the same density, but it appears

less well defined.

slide16

Now we have entered the antrum region. On the next image, you will appreciate just how much

the pancreas is posterior to the stomach. The other highlighted circle represents the duodenum in plane

With the long axis of the body. The reason for its different density is that it is primarily a fluid containing

structure in this section. You can actually make out the bowel wall with the fluid filled lumen. The fluid

is less dense (darker) than the bowel wall.