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Following IV administration of technetium-99m trimethylbromide, there is prompt, homogenous concentration of radiotracer in the liver of normal intensity. The liver is normal in size, position, and shape. Subsequent images show prompt excretion of tracer into the biliary tract, small bowel, and gallbladder.
Following the administration of cholecystokinin, the gallbladder contracts normally. The gallbladder ejection fraction is 79% at 60 minutes. Normal range is >38% at any time point.