How To Measure The Common Bile Duct On Ultrasound | CBD Measurement USG Steps & Tips скачать в хорошем качестве

How To Measure The Common Bile Duct On Ultrasound | CBD Measurement USG Steps & Tips

Support the channel on Patreon: patreon.com/drsamsimaginglibrary How To Measure The Common Bile Duct On Ultrasound | CBD Measurement USG Steps & Tips Common Bile Duct Location: The CBD runs anterior to the portal vein and lateral to the hepatic artery. Often found near the head of the pancreas (important in transverse epigastric view). Use color Doppler to distinguish the CBD (nonvascular) from vessels. Measurement Steps: Identify the CBD in Longitudinal View Ensure you’re seeing the CBD in long axis. CBD should appear as an anechoic tubular structure with echogenic walls. Use Color Doppler: Turn on color Doppler to differentiate vascular structures (portal vein and hepatic artery) from the CBD (which will not show color flow). Freeze the Image at a Clear CBD View: Look for the CBD at the porta hepatis, or more inferiorly near the pancreatic head. Freeze when you get a clear, well-defined image of the CBD lumen. Place Calipers: Measure the inner diameter of the CBD. Place calipers from inner wall to inner wall (not outer-to-outer). Normal Range Less than 6 mm (general population) Up to 7–8 mm in post-cholecystectomy patients Add 1 mm per decade after age 60 as a rough rule of thumb