It's just a cloud, blocking off the external radiation, but nothing inside the ship has changed.

The recorded doses of external radiation received by the seven fathers were low.

In other cases, treatment combines surgery with external radiation.

If you already have bowel problems, external radiation may cause your symptoms to get worse.

The seeds are the second phase of his treatment, with hormone therapy the first and external radiation the third.

If you already have bowel problems, external radiation may make your symptoms worse.

Sometimes external radiation or hormone therapy is added to brachytherapy.

An arbitrary object may be hidden because it remains untouched by external radiation.

He said, "We don't know if the potency is the same as for external radiation."

Medical therapy may be required for patients who are still hyperthyroid despite surgery and external radiation.