title: Precise Localization of Occult Gastrointestinal Hemorrhage Using Dynamic SPECT/CT.
abstract: Active but intermittent gastrointestinal (GI) bleeding can be readily detected with dynamic planar scintigraphic imaging. This is a case of a 48-year-old woman who presented from an outside institution with active GI bleeding on 99mTc-labeled RBC (99mTc-RBC) scintigraphy, but the upper and lower GI evaluations failed to subsequently localize the site of persistent bleeding. Repeat 99mTc-RBC planar scintigraphy identified a focus of active extravasation in the right lower quadrant of the abdomen. Dynamic SPECT/CT imaging was immediately performed and further identified the ileocecal valve region as the precise site of active extravasation, which was confirmed at surgery.
authors.affiliation: From the *Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, The Ohio State University Wexner Medical Center, Columbus, OH; and †Division of Nuclear Medicine, Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
authors.forename: Douglas A
authors.initials: DA
authors.lastname: Murrey
authors.forename: Nathan C
authors.initials: NC
authors.lastname: Hall
authors.forename: Chadwick L
authors.initials: CL
authors.lastname: Wright
authors.forename: David A
authors.initials: DA
authors.lastname: Mankoff
mesh_terms: D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D064847:Multimodal Imaging; D015899:Tomography, Emission-Computed, Single-Photon; D014057:Tomography, X-Ray Computed