Radiation in medical imaging
Radiation doses used in medical imaging have low probabilities of damaging cells within the body.
To ensure that the public is not excessively exposed to radiation unnecessarily, medical imaging involving radiation is
performed when the medical benefits far outweigh the risk of danger to the patient.
Radiographers also practice the As Low As Reasonably Achievable (ALARA) principle when performing procedures
involving radiation. Its chief aim is to produce a diagnostic image with the least amount of radiation.
Radiation in therapy
The radiation doses used in therapy are much higher than that of diagnostic tests as the aim of therapy is to destroy the
cancer cells within the body. During treatment the area that receives maximum dose of radiation is very carefully shaped to
minimise radiation exposure to the healthy tissue surrounding the cancer. This ensures that as much of the healthy tissue is
preserved as possible.
Facts about radiation
Radiation is everywhere!
Radiation is emitted from the sun, radon in the ground and old building materials.
Even bananas are radioactive from the high Potassium content.
Radiation exposure accumulates in the body but our cells constantly try to repair and regenerate themselves.
How to be safe around radiation
Listen to your attending radiographer, we are here to look out for you!
Do not enter the X-ray room when the red light is on.
Stay within the designated areas in radiation therapy suites.
Ask your doctor or radiographer if you have any concerns regarding radiation exposure during tests.