A more accurate way to destroy tumours using beams of radioactive particles could help target hard-to-treat cancers that are close to sensitive organs, such as the spinal cord or optic nerve.

“That allows [you] to get a very crisp and beautiful image of where the particle stops,” says radiation physicist Mitra Safavi-Naeini of Australia’s Nuclear Science and Technology ...

Eyes High doses can cause cataracts. Thyroid Radioactive iodine can build up and cause cancer, particularly during growth. Lungs Breathing in radioisotopes can damage DNA. Stomach Radioactive ...