Biliary ultrasound: Difference between revisions
(gallstones on us) |
(L lateral decub positioning) |
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*Can use phased array or convex probe | *Can use phased array or convex probe | ||
*Look in midclavicular line at Right 11th/12th intercostal spaces or scan anteriorly from Morrison's pouch | *Look in midclavicular line at Right 11th/12th intercostal spaces or scan anteriorly from Morrison's pouch | ||
*Patient in Left lateral decubitus (if can tolerate) | |||
**Allow for better visualization of gallbladder (moves it anteriorly) | |||
**Better visualization of gallstones | |||
==Measurements== | ==Measurements== | ||
Revision as of 17:37, 21 September 2013
Technique
- Can use phased array or convex probe
- Look in midclavicular line at Right 11th/12th intercostal spaces or scan anteriorly from Morrison's pouch
- Patient in Left lateral decubitus (if can tolerate)
- Allow for better visualization of gallbladder (moves it anteriorly)
- Better visualization of gallstones
Measurements
- GB wall is normally <3-4mm
- Measure the ant wall with a short-axis view
- Causes:
- 1. Acute cholecystitis
- 2. Ascites
- 3. CHF
- Gallstones
- identify by hypoechoic "shadowing" behind hyperechoid stones
- if no shadowing, may be polyps, sludge, etc.
- identify by hypoechoic "shadowing" behind hyperechoid stones
- Common Bile Duct
- Measure from inner to inner
- Normal is up to 4mm to age 40 (add 1mm per decade thereafter)
- Acalculous cholecystitis
- GB is >10cm long & >4 cm wide
See Also
Source
Sonoguide