When a patient's therapy is administered via the bloodstream it is called:

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Unsealed radiation therapy, also known as systemic radiation therapy, involves administering radioactive material through injection, oral ingestion, or infusion into the bloodstream. This allows the radioactive material to travel throughout the body to target and destroy cancer cells. External radiation therapy uses a machine to deliver radiation to a specific area of the body, while radium therapy involves implanting radioactive material directly into the tumor. Sealed radiation therapy, also known as brachytherapy, involves implanting a radioactive source into or near the tumor for a specific amount of time.

When a Patient's Therapy Is Administered Via the Bloodstream It