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J Nucl Med Technol. 2014 Mar;42(1):79-80. doi: 10.2967/jnmt.113.132746. Epub 2014 Jan 27.

Scintigraphy of patient with hematochezia.

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  • 1Department of Radiology and Molecular Imaging, Oakland University and William Beaumont Health System, Royal Oak, Michigan.


Gastrointestinal bleeding can result in significant morbidity. Scintigraphy plays an important role in detecting, localizing, and grading the bleed. Effective scintigraphic evaluation of gastrointestinal bleeding can be complicated by its intermittent nature and the patient's hemodynamic instability. Dynamic evaluation, delayed imaging, and an understanding of the labeling process are necessary tools to help improve detection rate and localization.


gastrointestinal bleeding; in vitro RBC labeling; quality control

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