What is the accuracy TRBC scintigraphy in identifying site of severe lower gastrointestinal (GI) bleeding (LGIB)?

Updated: Jul 26, 2019
  • Author: Burt Cagir, MD, FACS; Chief Editor: BS Anand, MD  more...
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In a study by Ryan et al, TRBC scintigraphy identified the site of bleeding accurately in nine patients with massive LGIB; in six of the nine patients, the scintigraphy finding was positive in the first 5 minutes of the study. [48] In three patients, the scintigraphy finding was positive at 14-45 minutes. [48]

Emslie et al found that TRBC scanning is effective in localizing GI bleeding when positive within the continuous phase of imaging. [46]

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