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Anatomy of the abdominopelvic cavity (CT-Scan)

Antoine Micheau, MD, Denis Hoa, MD

Published on Saturday 02 February 2013

SECTION: Anatomy of the thorax, abdomen, and pelvis

Images and anatomical references

 

We commonly use normal exam of healthy patients to create the anatomical modules of e-anatomy. In this case, we’ve deliberately chosen an abnormal patient with an important peritoneal effusion. This allows to the user to perfectly see the different parts of the peritoneal cavity (omental bursa, paracolic gutters, mesentery, mesocolon…). That’s why this patient also has a hepatocellular carcinoma with cirrhosis, ascites, portal hypertension, portacaval anastomosis and splenomegaly!

 

 

Anatomy of the abdominopelvic cavity (CT-Scan):Omental bursa; Lesser sac,  Omental foramen; Epiploic foramen, Paracolic gutters, Subhepatic space

Anatomy of the abdominopelvic cavity (CT-Scan): Transverse view

 

Anatomy atlas of the abdominal, pelvic and peritoneal cavity on Computed Tomography

 

 

We performed an enhanced (portal venous phase – 70 seconds) multidetector computed tomography in transverse plane with coronal and sagittal reformatted images.

Data and DICOM images stocked on our PACS (Picture Archiving and Communicating System) were processed and exported as JPEG images.  Adobe Flash and Adobe Photoshop allowed us to develop an atlas-based application with suitable functionality and user interface for the study of the abdomen and pelvis anatomy (labelled according to the Terminologia Anatomica).

 

 

 

Anatomy of the abdominopelvic cavity (CT-Scan): Sigmoid mesocolon, Lesser omentum, Greater omentum, Visceral peritoneum

Anatomy of the abdominopelvic cavity (CT-Scan): Coronal view

 

Anatomy of the abdominopelvic cavity: how to visualize anatomic labels

 

This tool provides access to a CT atlas in the transverse, coronal and sagittal plane, allowing the user to interactively learn abdominal anatomy. Images are labelled according to the Terminologia Anatomica.

The horizontal menu gives access to the groups of anatomical labels:

 

  • Oesophagus
  • Stomach: different walls, lesser and greater curvature
  • Small intestine, including duodenum, jejunum and ileum
  • Large intestine: ascending, transverse and descending colon, sigmoid, rectum
  • Liver:  left and right lobe of liver, diaphragmatic and visceral surfaces, porta hepatis
  • Bile duct: common hepatic duct, cystic duct, gallbladder
  • Pancreas: different parts (head, neck and tail), pancreatic duct
  • Spleen:  splenic hilum, diaphragmatic and visceral surfaces
  • Peritoneum: lesser and greater omentum, transverse and sigmoid mesocolon, mesentery
  • Recesses, fossae and folds or peritoneal cavity: rectovesical pouch (Douglas), paracolic gutters, omental bursa with omental foramen, subphrenic space.
  • Urogenital system: kidney (renal cortex and sinus), ureter, urinary bladder, prostate, urethra
  • Abdominal regions:  epigastric region, hypochondrium, groin, inguinal region, umbilic
  • Bones: spine, costa and pelvic bone
  • Muscles of the abdominal wall
  • Arteries of abdomen and pelvis, including inferior and superior mesenteric artery and branches of internal iliac artery.
  • Veins: portal system with mesenteric and splenic veins, and branches of inferior vena cava
  • Lymphatic nodes: superior and inferior mesenteric nodes, coeliac nodes, colic nodes
  • Other structures: heart, lungs.

 

 

The “planes” menu allows to the user to choose between different kind of cross-section: transverse, coronal or sagittal.

 

Abdominopelvic cavity - Anatomy: Peritoneal cavity, Mesentery, Rectovesical pouch male, Superior mesenteric artery

Abdominopelvic cavity - Anatomy : Sagittal section


Anatomical parts

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