Some imaging modalities (e.g. X-ray, CT, Nuclear Medicine, Bone Densitometry, Mammography) do produce ionising radiation.  However, the use of these investigations are now very much part of accepted medical practice – justified because of clear clinical benefits.  And these benefits have to far outweigh the risks for clinicians to refer for investigations.

In addition, the population is subject background radiation. Though hard to estimate exactly, a small fraction of genetic mutations and malignant diseases which occur in people can be attributed to background radiation.  Medical exposures add about a sixth to the background dose.

MDI conforms to the regulations in this area – which are determined by statute – IR(ME)R 2000.  In addition, by using modern equipment, MDI seeks to minimise the effective dose.

Patients undergoing a Nuclear Medicine procedure can act to further reduce any risks.  They should be well hydrated to quickly eliminate the radioactive dose, and should avoid close contact with children under the age of five years and pregnant women.