Answer
The technetium-99m exametazime complex prepared from Ceretec crosses the blood–brain barrier because it is uncharged, lipophilic and of sufficiently low molecular weight.
Sources for this answer
- Ceretec 500 micrograms kit for radiopharmaceutical preparationGE Healthcare Limited · emc · SmPC §5.2 Pharmacokinetic properties · Version 1Document updated
Sources checked