An MRI scan uses magnets and radio waves to capture images inside your body without making a surgical incision. The scan allows your doctor to see the soft tissue of your body, like muscles and organs, in addition to your bones. An MRI can be performed on any part of your body. A lumbar MRI specifically examines the lumbar section of your spine — the region where back problems commonly originate.The lumbosacral spine is made up of the five lumbar vertebral bones (L1 thru L5), the sacrum (the bony “shield” at the bottom of your spine), and the coccyx (tailbone). The lumbosacral spine also consists of large blood vessels, nerves, tendons, ligaments, and cartilage.
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