Radionuclide imaging of bowel infarction complicating small bowel intussusception in dogs.
Technetium-99m (99mTc)-pyrophosphate was investigated for use as an indicator of intestinal infarction in intussuscepted bowel. Irreducible intussusceptions were created in eight adult mongrel dogs. Technetium-99m-pyrophosphate was then injected intravenously 24 and 48 hrs later for external scanning. In six of the dogs, infarction developed in the intussusception, and each demonstrated increased uptake of 99mTc-pyrophosphate on in vivo scintiscans. The two dogs without infarction showed no increase uptake of the radionuclide. Well-counting and specimen scanning confirmed increased radionuclide in the infarcted intussusceptions. These observations suggest that 99mTc-pyrophosphate is a reliable indicator of the vascular compromise that sometimes occurs with intestinal intussusception.
D000818:Animals; D011756:Diphosphates; D004285:Dogs; D007238:Infarction / Q000150:complications / Q000000981:diagnostic imaging*; D007421:Intestine, Small / Q000098:blood supply*; D007443:Intussusception / Q000150:complications / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013667:Technetium
D011756:Diphosphates; D013667:Technetium