title: Decreased radiopharmaceutical uptake (photopenia) in delayed phase scintigraphic images in three horses.
abstract: Decreased radiopharmaceutical uptake, photopenia, in delayed phase scintigraphic images is recognized in people but has only been reported rarely in horses. We describe three horses with septic osteitis, bone sequestrum formation, or distal limb thrombosis that had photopenia of the affected extremity. Photopenia may indicate the presence of ischemia and can be used to facilitate clinical decision making and prognosis assessment
authors: Department of Clinical Studies, New Bolton Center, University of Pennsylvania, Kennett Square, PA, USA. dglevine@vet.upenn.edu
authors: David G
authors: DG
authors: Levine
authors: Beth M
authors: BM
authors: Ross
authors: Michael W
authors: MW
authors: Ross
authors: Dean W
authors: DW
authors: Richardson
authors: Benson B
authors: BB
authors: Martin
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D005260:Female; D005552:Forelimb / Q000098:blood supply / Q000378:metabolism; D006614:Hindlimb / Q000098:blood supply / Q000378:metabolism; D006734:Horse Diseases / Q000000981:diagnostic imaging*; D006736:Horses / Q000378:metabolism; D007794:Lameness, Animal / Q000000981:diagnostic imaging; D008297:Male; D011877:Radionuclide Imaging / Q000662:veterinary; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics*; D013669:Technetium Tc 99m Medronate / Q000493:pharmacokinetics*; D020246:Venous Thrombosis / Q000000981:diagnostic imaging / Q000662:veterinary*
chemical_list: D019275:Radiopharmaceuticals; D013669:Technetium Tc 99m Medronate