BSIP, SEGUIN TEDDY / SCIENCE PHOTO LIBRARY BSIP, SEGUIN TEDDY / SCIENCE PHOTO LIBRARY
MRI scan. Radiographer observing an MRI scanner (behind glass) from the control room, as a patient's knee is scanned. The computer screens show a vertical cross-section through the patient's leg (centre left) and a view of the inside of the scanner. MRI (magnetic resonance imaging) is a diagnostic technique that produces cross-sectional images of parts of the body. These are built up from the tiny radio signals emitted when hydrogen atoms inside the patient's body are made to fall out of magnetic alignment. MRI is most useful for studying soft tissues. The images produced are examined by a radiographer and disorders such as tumours diagnosed.
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