MRI classification system for lumbar disc degeneration
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Disc degeneration can be graded on MRI T2 T2 spin-echo weighted weighted images using a grading grading system proposed by Pfirrmann1. This classification is not used on routine spine reports, being more important for for research purposes.
- grade I: disc is homogeneous with bright hyperintense white signal intensity and normal disc height
-
grade II
- disc is inhomogeneous, but keeping the hyperintense white signal
- nucleus and annulus are clearly differentiated, and
aa gray horizontalgrayband could be present - disc height is normal
-
grade III
- disc is inhomogeneous with an intermittent gray signal intensity
- distinction between nucleus and annulus is unclear
- disc height is normal or slightly decreased
-
grade IV
- disc is inhomogeneous with a hypointense dark gray signal intensity
- there is no more distinction between the nucleus and annulus
- disc height is slightly
oror moderately decreased
-
grade V
- disc is inhomogeneous with a hypointense black signal intensity
- there is no more
distinctiondifference between the nucleus and annulus - the
discdisc space is collapsed
A modified classification was proposed in 2007 by Griffith et al. 2.
-<p><strong>Disc degeneration</strong> can be graded on MRI T2 spin-echo weighted images using a grading system proposed by Pfirrmann <sup>1</sup>. This classification is not used on routine spine reports, being more important for research purposes.</p><ul>- +<p><strong>Disc degeneration</strong> can be graded on MRI T2 spin-echo weighted images using a grading system proposed by Pfirrmann <sup>1</sup>. This classification is not used on routine spine reports, being more important for research purposes.</p><ul>
-<li>nucleus and annulus are clearly differentiated and a horizontal gray band could be present</li>- +<li>nucleus and annulus are clearly differentiated, and a gray horizontal band could be present</li>
-<li>disc height is slightly or moderately decreased</li>- +<li>disc height is slightly or moderately decreased</li>
-<li>there is no more distinction between the nucleus and annulus</li>-<li>the disc space is collapsed</li>- +<li>there is no more difference between the nucleus and annulus</li>
- +<li>the disc space is collapsed</li>
-</ul><p>A modified classification was proposed in 2007 by Griffith et al <sup>2</sup>.</p>- +</ul><p>A modified classification was proposed in 2007 by Griffith et al. <sup>2</sup>.</p>
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