Proton therapy is a radiation therapy that uses tiny particles called protons. Protons are excellent
cell killers, but because of the way protons deliver their energy, proton therapy does not damage as
much healthy tissue as much as photon therapy. Therefore, a higher dose of radiation can be
targeted at the tumour without affecting many normal healthy cells.
Proton beam therapy (PBT) is an advanced form of radiotherapy, with radiation treatment delivered
by accelerated proton beams rather than X-rays. A proton beam delivers some radiation to healthy
tissue in reaching the tumour but very little radiation beyond the edge of the tumour being treated.
This means PBT is able to treat cancers just as effectively but delivers less radiation to other healthy
parts of the body which surround the tumour.
Proton Therapy has many advantages including:
Target’s tumours and cancer cells with precision and minimal exit dose.
Reduces overall toxicity.
Reduces the probability and/or severity of short- and long-term side effects on
surrounding healthy tissues and organs (e.g., reduces the likelihood of secondary
tumours caused by treatment).
Precisely delivers an optimal radiation dose to the tumour.
Can be used to treat recurrent tumours, even in patients who have already received
Improves quality of life during and after treatment.
Increases the long-term, progression-free survival rates for certain types of tumours.