Magnetic resonance imaging (MRI) investigation

Magnetic resonance imaging (MRI) is a diagnostic imaging method that does not use ionising radiation for image acquisition. Because the most common atom in the body is hydrogen, the tomographic image is obtained from the behaviour, location, concentration of hydrogen atoms and chemical bonds with other atoms. The investigation is performed in a magnetic field that is thousands or tens of thousands of times stronger compared to the magnetic field of the Earth. While the patient is in the magnetic field, radio waves with a certain frequency are transmitted resulting in the excitement of atoms and signals, which are the basis for the reconstruction of an image.

Medicum provides MRI scans of the following regions of the body:

  • Brain
  • Vertebral column
  • Joints

Absolute contraindications:

  • Cardiac pacemaker
  • Brain aneurysm clips
  • Aortic clips
  • Implanted neuronal transmitters
  • Insulin pumps
  • Metal foreign bodies in the brain and eye region

Limitations due to MRI device dimension:

  • For a thoracic of lumbar scan it is necessary that (as measured in the vertical position to the patient) the abdominal or thoracic highest point distance (height) from the study table is not be more than 26-27 cm.
  • For knee joint scans it must be taken into account that the largest diameter of a joint is less than 18.5 cm.

These restrictions are due to the complex configuration of the cores and internal dimensions.

Magnetic resonance imaging scans are performed in Lasnamäe Medicum (Punane 61, Tallinn).

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Magnetic resonance imaging (MRI) scan patient information