This medicine is a radioactive drug used for diagnostic imaging to help doctors see inside your body and diagnose diseases like heart conditions or breast lumps.
The usual dose for adults is between 250 and 800 MBq, determined by your doctor.
It is given as an injection into a vein. For heart scans, you might get one injection at rest and another when your heart is working harder (e.g., after exercise). For breast scans, you will get one injection.
Your doctor will determine your exact dose; overdosage is unlikely as it's a single, controlled dose given by a professional.