(Avis Favaro, Elizabeth St. Philip. Alexandra Mae Jones/ CTV News) — A CT scan is usually used to diagnose a problem, not treat it.

But Canadian scientists are using CT scans to test out a provocative theory: could low doses of radiation from the scans actually help treat Alzheimer’s?

Results from a small pilot study  …

(Carla K. Johnson/ Global News) — Doctors are reporting improved survival in men with advanced prostate cancer from an experimental drug that delivers radiation directly to tumor cells.

Few such drugs are approved now, but the approach may become a new way to treat patients with other hard-to-reach or inoperable cancers.  …