• MRI (Magnetic resonance imaging) does not use harmful ionising radiation, making it the safest diagnostic imaging technique for detecting cancers.

• MRI uses strong magnetic fields and non-ionising radiations to accurately detect pathological and physiological changes in the living tissue.

• Computed tomography uses X-rays to generate a three-dimensional image of the internals of an object.

• Techniques like radiography (use of X-rays) is very useful to detect cancers of the internal organs.

• Cancer detection is based on biopsy and histopathological studies of the tissue and blood and bone marrow tests for increased cell counts in the case of leukemias.

• In biopsy, a piece of the suspected tissue cut into thin sections is stained and examined under microscope (histopathological studies) by a pathologist.