Anterior view of the portal venous system.

Topographic relations of the spleen. A knife pushed through the 9th intercostal space, just posterior to the midaxillary line, will penetrate the pleural cavity, diaphragm, peritoneal cavity and spleen.

Posterior view of the duodenum and pancreas with associated vessels.

Dual blood supply of the duodenum and pancreas from the celiac trunk and the superior mesenteric artery.

Coronal MRI of the abdomen. Image at right shows level of scan (line B).

Anterior view of the pancreas, duodenum and spleen showing blood supply. Stomach is also shown and is reflected superiorly.

Dual blood supply of the duodenum and pancreas from the celiac trunk and the superior mesenteric artery.

Sagittal MRI of the abdomen through the level of the vertebral column. Small image at right shows level of scan (line C).

Coronal MRI of the abdomen. Image at right shows level of scan (line D).

Sagittal MRI of the abdomen at the left side of the vertebral column. Small image at right shows level of scan (line B).

Sagittal MRI of the abdomen at the level of the left side of the vertebral column. Small image at right shows level of scan (line D).

Transverse or horizontal (axial) MRI of the abdomen at the level of the lower L1. Image at bottom illustrates level of scan (line D).

Spleen with splenic vessels