MRI
is the investigative tool of choice for imaging the spine,
not just in showing the vertebrae (bones that form the
spine) but also the soft tissue components of the spinal
region.
This makes MRI more useful than conventional X ray techniques in spine imaging
and has the additional advantage of being free from ionising radiation.
MRI
is excellent at visualizing degenerative
changes, such as those seen in arthritis.
This condition can narrow the bony
spaces through which the spinal nerves
pass causing pain. MRI can also demonstrate
disease of the lumbar discs between
the vertebrae which may dehydrate
and bulge (slipped disc) impinging
upon the spinal cord and causing
pain such as sciatica.
An
MRI may be performed following trauma
(injury) or in advanced pathological
states, to rule out acute compression
of the spinal cord causing weakness
or paralysis. Its soft tissue discrimination
makes MRI scanning the first choice
in the evaluation of abscesses, tumors,
or other masses near the spinal cord.
MRI can also detect subtle changes
in the bone which may be due to infection
or tumor.
Patients
attending for MRI scans of the spine
will need to be able to lie fairly
flat, especially for the thoracic
spine (upper back).
Scan
times may vary depending upon
the individual case.
MRI
of the Blood Vessels (Magnetic Resonance Angiography)
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