What does an MRI scan treat?

MRI uses a magnetic field and radio waves to create images of soft tissues and organs. In oncology, it can help examine areas such as the brain, pelvis, spine or prostate, show the size and position of an abnormal area and support treatment planning. It may also be used during follow-up to compare findings over time.

An MRI image cannot by itself prove that an area is cancer. A clinician combines it with your symptoms, examination and other tests. A biopsy may be needed to identify cells. For prostate assessment, a PSA test and other information may be considered alongside imaging. MRI can also be used when investigating a possible brain tumour or assessing people with inherited cancer risk.

Tell the imaging team about implants, metal fragments, kidney problems, pregnancy, allergies and difficulty lying still. Remove metal objects and follow instructions about food or drink if preparation is required. The scanner is noisy and the examination involves staying in one position; ask about communication, ear protection or support if enclosed spaces are difficult.

MRI itself is not a treatment and does not usually require recovery. If contrast is used, report a rash, facial swelling, breathing difficulty or severe dizziness immediately. Seek medical advice for new neurological symptoms such as weakness, confusion, seizure or a severe sudden headache, regardless of whether an MRI has been scheduled.

What area will the MRI examine, and what question is it intended to answer? Will contrast be used? When will I receive the report, and could a biopsy or another test be needed?