"if the tracer does not enter the gallbladder GB) after a sufficient length of time, then this is compatible with obstruction of the cystic duct"
"if assessing for chronic cholecystitis or biliary dyskinesia, imaging is also performed for up to 60 minutes after the injection (with some institutions halting earlier if maximal GB filling is observed, typically at 40-45 minutes)"
"after GB filling, CCK, or the alternative liquid fatty meal, is given to stimulate gallbladder contraction"
"images are taken for a further 45-60 minutes so the GB ejection fraction of the gallbladder can be determined"
"the radiopharmaceutical is injected intravenously (IV); after IV injection, IDA radiotracers are taken up by hepatocytes and then excreted into the biliary system 1"