General NM · Gastrointestinal
Gastrointestinal
Which test should I use?
Pick a clinical scenario for the suggested first-line test and alternative.
Tracers at a glance
Tap any tracer for its mechanism, timing and use — these entries recur across the site.
Clinical topics
Hepatobiliary (HIDA)
Acute cholecystitis, bile leak, atresia.
GI bleeding
⁹⁹ᵐTc-RBC localisation of lower-GI bleeding.
Meckel’s diverticulum
Pertechnetate ectopic gastric mucosa.
Gastric emptying
Gold-standard gastroparesis quantification.
Salivary scintigraphy
Gland function, Sjögren’s, obstruction.
GI transit studies
Oesophageal, small-bowel & colonic transit.
Hepatobiliary & liver–spleen imaging
HIDA, GBEF, biliary atresia, colloid, RBC and MAA. Full article.
Liver transplant imaging
HIDA for leak, obstruction and graft function. Full article.