"Technetium-99m hepatobiliary iminodiacetic acid (Tc-99m HIDA) is one of the technetium radiopharmaceuticals used primarily in the functional evaluation of the hepatobiliary system (liver, gallbladder, and bile ducts) 1."
"if patient is post-cholecystectomy and for bile leak evaluation, they do not need to be fasted of have pain medication withheld"
Expected headings
"Characteristics"
"Uses"
"Patient preparation"
"Usual dose"
"Normal findings"
"Abnormal findings"
"normal distribution: taken up by hepatocytes and follows the passage of bile via the biliary tree, gallbladder and bowel 3"
"excretion: gastrointestinal tract; minimal renal excretion (increased with hepatocellular dysfunction)"
"unconjugated; directly secreted into bile canaliculi"
"infants for all other indications should fast for 2 hours; children for 2-4 hours (if medically necessary infants can have clear fluids)"
"Tc-99m HIDA taken up immediately by hepatic parenchyma; rapid clearance of the mediastinal blood pool 3"
"1/3 bile enters gallbladder; remaining 2/3 bypasses and enters duodenum"
"10 minutes: gallbladder begins to fill; usually filled by 30-40 minutes (up to 60 minutes is considered normal)"
""rim sign", pericholecystic band of increased activity (late stage acute cholecystitis, associated with severe gangrenous cholecystitis) specificity 100%; positive predictive value 100%; sensitivity 49%; negative predictive value 39% 2"
""rim sign", pericholecystic band of increased activity (late stage acute cholecystitis, associated with severe gangrenous cholecystitis) specificity 100%; positive predictive value 100%; sensitivity 49%; negative predictive value 39% 2"
""rim sign", pericholecystic band of increased activity (late stage acute cholecystitis, associated with severe gangrenous cholecystitis) specificity 100%; positive predictive value 100%; sensitivity 49%; negative predictive value 39% 2"