Bile duct dilatation | Radiology Reference Article - Radiopaedia.org
2023年3月29日 · Ultrasound. Harmonic imaging is useful when assessing the biliary system, as it improves the clarity of the lumen. intrahepatic bile ducts. >2 mm. >40% of adjacent portal vein. extrahepatic bile ducts (common hepatic duct and common bile duct) usually measured in the proximal duct, near the proper hepatic artery.
Bile duct dilatation - Radiopaedia.org
Ultrasound. Harmonic imaging is useful when assessing the biliary system, as it improves the clarity of the lumen. intrahepatic bile ducts. >2 mm. >40% of adjacent portal vein. extrahepatic bile ducts (common hepatic duct and common bile duct) usually measured in the proximal duct, near the proper hepatic artery.
Periportal halo (CT/US) | Radiology Reference Article
2024年8月28日 · Periportal halo or periportal collar sign refers to a zone of low attenuation seen around the intrahepatic portal veins on contrast-enhanced CT or hypoechogenicity on liver ultrasound. It likely represents periportal edema, which is often used as a synonymous term.
Choledochal cyst | Radiology Reference Article - Radiopaedia.org
Ic: dilatation of the common bile duct portion of extrahepatic bile duct. type II: true diverticulum from extrahepatic bile duct. type III: dilatation of extrahepatic bile duct within the duodenal wall (choledochocele) type IV: next most common.
Common bile duct | Radiology Reference Article | Radiopaedia.org
2024年7月5日 · On ultrasound, it is not always possible to confidently see where the cystic duct enters the common hepatic duct to form the common bile duct. Therefore it is common practice to use the term common duct (CD) as a term conflating the common hepatic and common bile ducts.
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Radiopaedia.org, the peer-reviewed collaborative radiology resource
Gallbladder hydrops | Radiology Reference Article - Radiopaedia.org
2024年8月6日 · Gallbladder hydrops or mucocele 5 refers to marked dilatation of the gallbladder due to chronic obstruction of the cystic duct resulting in accumulation of sterile non-pigmented mucin.
Biliary cystadenoma | Radiology Reference Article - Radiopaedia.org
2024年8月16日 · Ultrasound A biliary cystadenoma appears as a unilocular or multilocular cyst with enhanced through transmission. The content of the cysts may range from completely anechoic to having low-level echoes from blood products, mucin, or proteinaceous fluid.
Choledocholithiasis | Radiology Reference Article - Radiopaedia.org
2024年5月8日 · Although ultrasound is usually the first investigation for biliary disease, it has average sensitivity for the detection of biliary stones within the bile duct. Ultrasound should be performed both longitudinally and transversely through the duct with particular attention paid to the very distal portion of the common bile duct as it passes ...
Multiple biliary hamartomas | Radiology Reference Article
2024年6月20日 · Ultrasound. Small hamartomas are usually echogenic if discretely seen. Often tiny individual hamartomas cannot be resolved and are instead interpreted as diffuse heterogeneous liver echotexture. Larger hamartomas (>10 mm) may appear hypoechoic or anechoic and comet-tail artifact may be seen 9.
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