What is the role of radionuclide scanning in the diagnosis of appendicitis?

Updated: Jul 23, 2018
  • Author: Sandy Craig, MD; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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Whole blood is withdrawn for radionuclide scanning. Neutrophils and macrophages are labeled with technetium Tc 99m (99m Tc) albumin and administered intravenously. Then, images of the abdomen and pelvis are obtained serially over 4 hours. Localized uptake of tracer in the RLQ suggests appendiceal inflammation; this is shown in the image below.

Technetium-99m radionuclide scan of the abdomen sh Technetium-99m radionuclide scan of the abdomen shows focal uptake of labeled WBCs in the right lower quadrant consistent with acute appendicitis.

Go to Imaging of Appendicitis for more information on this topic.

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