Causes of Dizziness When MRI Scan

Among those who had undergone the procedure scan with MRI (magnetic resonance imaging), was rarely complain about feeling tired, groggy or dizzy after lying in the imaging machine.

According to recent studies by scientists, the effect of dizziness or discomfort complaints were caused by strong magnetic fields and radio waves emitted by the tool.

The experts from Johns Hopkins Medical Institutions in the U.S. states, strong waves and magnetic fields emitted to create a detailed image of the epidermis in the body can affect the inner ear organs. Researchers found a disturbance in the ear called the labyrinth known plays an important role in controlling the balance.

The findings, published in the journal Current Biology indicates, a strong magnetic field can drive fluid through the maze and trigger a feeling giddy. This conclusion is the result of the monitoring study of 10 able-bodied volunteers and two volunteers who experienced disturbances in the function of the labyrinth.

When the volunteers underwent MRI scans, researchers monitored the effect called nystagmus, movement as a reflex of the eye that indicates that the brain detects a movement. Nystagmus effects seen in healthy volunteers, but volunteers are not found in the maze impaired. This is a strong indication that the labyrinth do play an important role in the case of vertigo associated with MRI.

Subsequent experiments showed that strong magnetic fields can cause nystagmus quickly. Direction of eye movement can also change depending on which way the volunteers into an MRI machine or scan tool.

The scientists believe, vertigo MRI is a condition caused by the interplay (influence) between magnetic field and the fluid that fills the canal labyrinth. The magnetic field is thought to have pushed the particles that govern the circulation of fluid in the Kalan.

In turn, this raises the pressure in the cells that use fluid flow to detect motion. This discovery, say researchers also provide important implications for research on MRI and its relationship to the brain.

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