Duct is blocked: Normally the gallbladder shows up in only a few minutes. Not showing up after 2 hours suggests the duct to the gallbladder is blocked, not allowing the tracer to enter the gallbladder.
Answered 7/31/2017
4.7k views
HIDA...: If tracer is visualized in the bowel at 1 hour of imaging but gallbladder is not visualized, there are two options. First is to give morphine which causes contraction of sphincter of oddi ; speeds up study so that imaging is only performed for an additional 30 min. Alternatively, the old-school method is to image up to 4 hours. If gallbladder is not seen at 4 hours --> cystic duct obstruction.
Answered 7/31/2017
4.7k views
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