Recognition of lumbar disk herniation with NMR

Area of Science:

• Radiology
• Medical Imaging
• Neurosurgery

Background:

• Herniated lumbar intervertebral disks are a common cause of low back pain.
• Computed tomography (CT) is the current standard for diagnosis.
• Nuclear magnetic resonance (NMR) offers a non-invasive imaging modality.

Purpose of the Study:

• To evaluate the efficacy of NMR in detecting herniated lumbar intervertebral disks.
• To compare NMR findings with CT scans in patients with suspected disk herniation.

Main Methods:

• Fifteen NMR studies were conducted on 14 patients with suspected lumbar disk herniation.
• NMR findings were correlated with available CT scan results.
• Signal intensity changes in the nucleus pulposus were analyzed.

Main Results:

• NMR identified 12 out of 16 posterior disk ruptures seen on CT.
• All ruptured disks exhibited diminished nucleus pulposus signal intensity on NMR.
• NMR successfully differentiated postoperative fibrosis from thecal sac and disk.

Conclusions:

• NMR shows potential as a diagnostic tool for herniated lumbar intervertebral disks.
• Diminished nucleus pulposus signal intensity is a key indicator of disk rupture on NMR.
• While CT remains the gold standard, NMR may supplement its diagnostic capabilities.