Magnetic resonance imaging (
MRI) of the spine is a noninvasive procedure to evaluate different types of tissue, including the spinal cord, vertebral disks and spaces between the vertebrae through which the nerves travel, as well as distinguish healthy tissue from diseased tissue.
The
cervical, thoracic and
lumbar spine MRI should be scanned in individual sections.
The scan protocol parameter like e.g. the
field of view (
FOV),
slice thickness and
matrix are usually different for
cervical, thoracic and
lumbar spine MRI, but the method
is similar. The standard views in the basic spinal
MRI scan to create detailed
slices (cross sections) are
sagittal T1 weighted and
T2 weighted images over the whole body part, and transverse (e.g.
multi angle oblique) over the
region of interest with different pulse
sequences according to the result of the
sagittal slices. Additional views or different types of pulse
sequences like
fat suppression,
fluid attenuation inversion recovery (
FLAIR) or
diffusion weighted imaging are created dependent on the indication.
Indications:
•
Neurological deficit, evidence of radiculopathy, cauda equina compression
•
Primary tumors or drop metastases
•
Infection/inflammatory disease, multiple sclerosis
•
Postoperative evaluation of
lumbar spine: disk vs. scar
•
Localized back pain with no radiculopathy (leg pain)
Contrast enhanced MRI techniques delineate infections vs. malignancies, show a syrinx cavity and support to differentiate the postoperative conditions. After surgery for disk disease, significant fibrosis can occur in the spine. This scarring can mimic residual disk herniation.
Magnetic resonance myelography evaluates spinal stenosis and various intervertebral discs can be imaged with
multi angle oblique techniques.
Cine series can be used to show true range of motion studies of parts of the spine.
Advanced
open MRI devices are developed to perform positional scans in the position of pain or symptom (e.g.
Upright™ MRI formerly Stand-Up
MRI).