I'm being injected with technetium-99m for a hida scan, what to expect?

HIDA: You should not feel any side effects from the tc99m itself. They will image until they see tracer in the gallbladder and bowel. Could be an hour or more. If they do a gallbladder ejection fraction, they will give you cck which could cause some cramping or abdominal pain.

Gall bladder test: The patient is injected intravenously with tc99m hida (radiotracer).The patient lies on table with scaning camera over anterior abdomen. First part of study shows extracction of tracer from blood stream, visualization of gb and bowel.(30-40 min) patient receives slow injection of cck to stimulate gall bladder contraction. (60 min more imaging).Sometimes discomfort possibly related to gb disease.