| 摘要 |
A packaged reagent for making Technetium-99m labelled tin colloids comprises 0.75 to 750 mu g stannous tin, 50 to 7000 mu g sodium, potassium or ammonium ion, 40 to 5000 mu g fluoride ion, 50 to 10,000 mu g of a non-toxic non-ionic surface-active agent based on poly (alkylene oxide)glycol and a container aseptically enclosing said reagent. The presence of the surface-active agent, preferably one of the Pluronic types, results in smaller sized particles being produced on addition of pertechnetate to the reagent. This results in a higher liver/spleen biodistribution ratio.
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