External beam radiotherapy became more popular as stronger [X-ray] radiation sources became available in the middle of the 20th century.

Radiation therapy is given as external beam radiotherapy to the pelvis and brachytherapy (internal radiation).

External beam radiotherapy is recommended when there is a high risk of regional recurrence, even after optimum surgical treatment.

Compared to external beam radiotherapy, brachytherapy allows a reduction in treatment time and reduced radiation exposure to healthcare staff.

Proton therapy is a type of external beam radiotherapy using ionizing radiation.

External beam radiotherapy or teletherapy is the most common form of radiotherapy.

Of these, proton therapy is by far the most common, though still quite rare compared to other forms of external beam radiotherapy.

The statistics show that around 900 cases are treated with external beam radiotherapy and around 150 cases receive Brachytherapy annually.

Radiation therapy can be delivered by either external beam radiotherapy or brachytherapy (internal radiotherapy).

Treatments using external beam radiotherapy are typically given over a period of five to seven weeks, performed five days a week.