Ultrasound-Cross Sectional Anatomy

Ultrasound-CrossSectional Anatomy

Ultrasound-CrossSectional Anatomy


The system is a collection of organs and ducts that help in theproduction and transport of bile. Notable organs involved in theprocess are the bile duct, gallbladder, and related structures. Biletransport occurs in a sequential process initiated by its secretionfrom the liver. It is collected by ducts flowing from the liver viathe right and left and hepatic ducts (Ressurreição, Batista,Soares, Marques, Matos, Andrade, &amp Portugal, 2014). The ductsdrain into the hepatic duct which joins the cystic duct forming thebile duct that runs from the liver to the duodenum.


The system comprises numerous organs involved in the transportationof bile. The gallbladder, a pear-shaped organ concentrates and storesbile. It lies on the visceral surface of the liver. The gallbladdercomprises the fundus, body, and the neck. The neck of the gallbladdernarrows joining the cystic duct at a junction. The cystic ducttransports bile from the gallbladder and bile duct to the duodenum(Ressurreição, Batista, Soares, Marques, Matos, Andrade, &ampPortugal, 2014). It joins the hepatic duct forming the common bileduct that has its course along the border of lesser omentum togetherwith the portal vein and hepatic duct. The anatomy is defined by thepresence of sphincter of Oddi that inhibits biliary flow andpancreatic secretions to the duodenum (Ressurreição, Batista,Soares, Marques, Matos, Andrade, &amp Portugal, 2014).


Ultrasonography provides the structural information of the biliarysystem. It provides details of the gallbladder and is useful inscreening for abnormalities in the biliary tract. Sonographicappearance relies on transmission of sound waves with varyingfrequencies through tissues followed by conversion of their signalsto the anatomical images seen on the screen. Normal measurement ofthe gallbladder should be 2mm or less. A normal common bile ductshould have a width of 4mm, but the size could vary among olderpatients (Ressurreição, Batista, Soares, Marques, Matos, Andrade, &ampPortugal, 2014).

Skillsneeded to evaluate the Biliary System

One should have an ultrasound degree that equips them with the skillsto conduct ultrasonography procedures. Soft skills such as theability to coordinate their hands and what they see are essential.Interpersonal skills are needed to help explain procedures topatients.


Ressurreição,J., Batista, L., Soares, J. T., Marques, I., Matos, E., Andrade, L.,… &amp Portugal, P.

(2014). Normalanatomy and anatomic variants of the biliary tree and pancreaticductal

system atMRCP-what the clinicians want to know. In European Society ofRadiology,

Congress ECR.