When the ligand and the reducing agent are added to the eluent used in the separation of 99mTc-diphosphonate complexes by column chromatography, a significant increase in recovery is obtained. The addition of the ligand and the reducing agent also influences the shape of the chromatogram.
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The role of 99mTc-diphosphonate bone SPECT/CT in the ankle and foot.
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The evaluation of the osseous ankle and foot pathology often poses a clinical and diagnostic challenge because of the complex anatomy and structural biomechanics of the region. Further investigation involves a multimodality imaging approach. Although both structural and functional imaging techniques have their strengths, namely, the high specificity of the former and superior sensitivity of the latter, they also have a number of limitations when used in isolation.
View Article and Find Full Text PDFEffect of the composition of the eluent in the chromatography of 99mTc-diphosphonate complexes.
Int J Rad Appl Instrum A
August 1988
Analytical Chemistry Laboratory, State University of Utrecht, The Netherlands.
When the ligand and the reducing agent are added to the eluent used in the separation of 99mTc-diphosphonate complexes by column chromatography, a significant increase in recovery is obtained. The addition of the ligand and the reducing agent also influences the shape of the chromatogram.
View Article and Find Full Text PDFThe bone scanning complex, 99mTc-Sn-EHDP, consisting of the nuclide technetium-99m, stannous ion and ethane-1-hydroxy-1,1-diphosphonate, administered intravenously is retained in soft tissues in proportion to increasing calcium content of the tissues. Within bone tissue, the retention is proportional to vascularity and to surface area of calcium phosphate in bones and not necessarily to calcium and phosphate concentration. The nuclidic agent 99mTcO4-BUT NOT THE 99MTc-diphosphonate is selectively taken up by the thyroid and this uptake can be blocked by administering sodium perchlorate.
View Article and Find Full Text PDFThe suitability of various radiopharmaceuticals (99mTc-tetracycline analogs, 99mTc-glucoheptonate, 99mTc-diphosphonate, and 67Ga-citrate) for use in imaging acute myocardial infarction was assessed by determining their biologic distributions in experimentally infarcted dogs. The highest infarct-to-normal myocardial concentration ratio was found with 99mTc-diphosphonate (27.9:1); the highest infarct-to-liver ratio was also found with 99mTc-diphosphonate (15.
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