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Technetium Tc 99m plasmin in the diagnosis of inflammatory disease

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Abstract

The localization characteristics of technetium Tc 99m plasmin were studied in experimental animals to investigate the use of99mTc-plasmin for imaging inflammatory processes. At various times after abscess induction using turpentine in rats, the in vivo distribution properties of99mTc-plasmin, gallium citrate Ga 67,125I-fibrinogen, and99mTc-human serum albumin (HSA) were studied by gamma-camera imaging. The in vivo binding of each radiopharmaceutical was also tested in rat and human plasma clots. Region-of-interest analyses of gamma-camera images showed relatively poor99mTc-plasmin localization at sites of abscess formation. The ratio of abscess-to-control activity of this radiopharmaceutical did not exceed that of67Ga,125I-fibrinogen, or99mTc-HSA. In vitro assays of each of the radiopharmaceuticals in plasma clots showed99mTc-phasmin and125I-fibrinogen to have the best localization characteristics.

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Owunwanne, A., Weber, D.A., Spar, I.L. et al. Technetium Tc 99m plasmin in the diagnosis of inflammatory disease. Eur J Nucl Med 12, 496–499 (1987). https://doi.org/10.1007/BF00620473

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  • DOI: https://doi.org/10.1007/BF00620473

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