Sodium imaging allows determination of the salt content of organs and their ability to control salt balance.

Measurements of sodium levels are of particular interest for determining the energy-dependent sodium-potassium pump (Na+/K+-ATPase) - a vital transporter.

The transport process and the total sodium content are affected in many clinical conditions with tissue damage, fluid retention or cell death.

The figure shows measurements of sodium content in the brain, heart, kidneys, and thigh muscles of a healthy individual.