During training for new radiation nurses, you have learned that the delivery of high-energy radiation (e.g. electrons, x-rays, photons) to kill cancer cells by using a machine to focus a beam of...

During training for new radiation nurses, you have learned that the delivery of high-energy radiation (e.g. electrons, x-rays, photons) to kill cancer cells by using a machine to focus a beam of radiation on the body is called:

1 external radiation therapy

2 internal-beam radiation therapy