During treatment, you will lay down on a table, which slides into a machine that delivers radiation beams.

The radiation beams are shaped to fit the tumor.

It uses a computer to make a 3-dimensional (3-D) picture of the tumor and shapes the radiation beams to fit the tumor.

Usually, superficial radiation beams such as electron beams are used.

During the procedure, real time X-ray is used to accurately position the device before delivering radiation beam.

High-energy radiation beams are trained on the tumor from different angles.

The Centaurians confirm his suspicions when they fire a radiation beam at the ship.

The filter is used to modify the intensity distribution in a radiation beam.

It is impossible to aim the radiation beam exactly because the tumor moves as the patient breathes.

To back up this demand, he begins destroying swathes of the Earth's surface using a radiation beam.