Which one of the following techniques is safest for the detection of cancers?
Magnetic resonance imaging (MRI)
Radiography (X-ray)
Computed tomography (CT)
Histopathological studies
Magnetic Resonance Imaging (MRI) is a non-invasive technique that uses strong magnetic fields and provides information on the chemical, metabolic and biochemical data of tissues without the need for time-consuming chemical analyses. It is the safest technique to detect cancer because it does not use radiation and therefore does not cause any side effects. So the correct answer is "magnetic resonance imaging (MRI)". Hence, option 1 is correct.