CT ABDOMENPELVIS ANATOMY

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CT ABDOMEN/PELVIS ANATOMY USC/SOM Department of
Radiology Kirk Peterson, MD Class of 2004
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In this sequence of images, we will label the
abdominal vasculature. The CT images are 5mm
slices with soft tissue window settings. IV and
oral contrast have been administered which causes
the vessels and GI tract to appear hyperdense
(white). Some images will contain labels to
assist with tracking the vessels. Practice paging
up and down to trace vessels origin and
termination. It is best to view these images in
the movie mode IMAGES ARE VIEWED AS LOOKING
FROM THE FEETRIGHT
LEFT
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Follow the IV contrast filled Aorta as we descend
caudally. Branches and points of interest will be
noted.
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Azygous Vein. Hemiazygous Vein
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This is an excellent image of the right, middle
and left hepatic veins draining into the
Inferior Vena Cava. Dont confuse this structure
with the IVC, this is the esophagus at the level
of the Lower esophageal sphincter, page up and
down to confirm this.
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The outline of the Inferior Vena Cava is more
distinct in this image.
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Portal Vein Branching into the Liver
Stomach
Liver
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More portal vein branching into the liver lobes
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Splenic Artery. Splenic Vein. Scroll up and
down to confirm.
Spleen
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Splenic Vein
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Proper Hepatic Artery. Splenic Vein Portal vein
Adrenal Glands
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You can see the Celiac artery starting to branch
from the Aorta. You can follow this down in the
next four images Proper Hepatic Artery is labeled
in the upper right The splenic vein and artery
are in the lower left
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Proper Hepatic Artery and Splenic Artery (the
splenic artery is the circle). Splenic Vein
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Here the Splenic Vein is emptying into the portal
vein. Follow this up and down.
Pancreas
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This is the Superior Mesenteric Artery
branching off the Aorta.
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Rt. and Lt.Kidneys
Pancreas
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Renal Veins emptying into the IVC. We also see
the right renal artery branching off the Aorta,
follow it down till you see it enter the right
kidney. The Superior Mesenteric Vein is outlined
on the top of this image. If you follow the SMV
up, you will see it empty into the Portal Vein.
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Here we see the right and left renal vein
entering into the Inferior Vena Cava. We Also see
the left renal artery branching off the aorta and
heading toward the left kidney. Page up and down
to trace these vessels.
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Superior Mesenteric Vein follow it up as it
joins the Splenic Vein to form the Portal Vein
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Transverse Colon
Small Bowell
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Note inferior mesenteric artery emerging from
aorta Inferior mesenteric vein extends cephalad
to join smv.
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Aorta bifurcates into common illiac
arteries Appendix is noted coiling in Rt. Lower
quadrant Note air in lumen on adjacent scans
Psoas muscles
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