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Medical Imaging & Diagnostic Tests:

X-Rays, Electrons, & Magnetic Spin

Chapter 9
MR Neurogram of Cervical Spinal Nerves
Unlike a standard MRI, a Neurogram shows the nerves including the dorsal root ganglions (d) which are important  sensory processing points outside the spinal cord.  An injured or compressed nerve may show up as hyperintense (h) – abnormally bright . An MRN also shows where spinal nerves (s) are bent out of their normal straight course by an entrapment.