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Proton beam therapy (PBT) at Barts Health London Private Care

Proton Beam Therapy uses an external source of ionizing radiation to target a tumour with a beam of protons. The beam is tightly focused, and delivers a lethal burst of protons to the tumour but not to the surrounding tissue. The procedure can have negative side effects, like all radiotherapies, but the side effects to surrounding tissue are reduced compared to the more diffuse x-ray techniques.