Lumbar Spine MRI - Detailed Analysis

What Is Being Imaged?

MRI Sequences & Views

LEFT SIDE - Sagittal Views (Side Profile)

• Column 1 (T2 sagittal): Standard T2 - shows disc hydration, spinal cord/cauda equina, and any canal narrowing
• Column 2 (T2 sagittal): A second slightly offset sagittal cut
• Column 3 (T2 sagittal/STIR-like): A brighter sequence (possibly STIR or T2 fat-sat) - shows fluid and inflammation with greater contrast. The spinal canal fluid signal is very bright white here.

• The lumbar vertebral bodies (L1 through S1)
• The intervertebral discs between each level
• The thecal sac (the bright white CSF column surrounding the cauda equina)
• The conus medullaris (tapered end of the spinal cord)

RIGHT SIDE - Axial Views (Cross-sections)

• The circular spinal canal and thecal sac
• The nerve roots floating in bright CSF
• The disc or vertebral body
• The facet joints posteriorly
• The psoas muscles on either side

BOTTOM - Coronal Views (Front-to-Back)

• Spinal alignment (looking for scoliosis)
• Vertebral body heights
• Disc heights and signal
• The full cauda equina column

Findings at Each Level

Upper Lumbar (L1-L2, L2-L3)

• Normal disc hydration - the nucleus pulposus (center of each disc) is bright on T2, indicating adequate water content
• Spinal canal is wide and open - the cauda equina nerve roots float freely in ample CSF
• Neural foramina (nerve exit tunnels) are patent - no nerve compression
• Vertebral bodies appear normal in height with no fractures

Lower Lumbar (L4-L5, L5-S1) - PATHOLOGICAL LEVELS

1. Disc Desiccation (Degenerative Disc Disease)
   • The discs at L4-L5 and L5-S1 appear dark/hypointense on T2 instead of bright white
   • This darkening means the disc has lost water content - it is drying out and degenerating
   • This is the earliest sign of disc degeneration and is extremely common in adults
2. Broad-Based Disc Bulging
   • The degenerated discs are bulging outward beyond the normal margins of the vertebral body
   • This pushes into the spinal canal from the front
3. Central Canal Stenosis (Spinal Canal Narrowing)
   • In the axial cuts at L4-L5 / L5-S1, the normally round/oval thecal sac is being compressed and flattened
   • This is mild-to-moderate central stenosis
   • The nerve roots inside are being crowded together
4. Neural Foraminal Stenosis (Nerve Exit Tunnel Narrowing)
   • The disc bulge extends into the lateral recesses on both sides
   • The tunnels where nerves exit the spine (foramina) are narrowed bilaterally
   • This can cause abutment or compression of the exiting nerve roots
5. Facet Joint Hypertrophy (Arthropathy)
   • The small joints at the back of the spine (facet joints) at lower levels show mild enlargement/wear
   • This further contributes to narrowing of the lateral recesses and canal

Spinal Alignment (Coronal Views)

• There is a mild lateral curvature (scoliosis) of the lumbar spine, convex toward the left
• This may be degenerative (due to uneven disc collapse) rather than idiopathic

Summary of Key Findings

Clinical Correlation

• Low back pain (aching, worse with prolonged sitting/standing)
• Radiculopathy - shooting pain, numbness, or tingling down one or both legs (if nerve roots are compressed)
• Neurogenic claudication - leg pain/weakness that worsens with walking and is relieved by bending forward (if central stenosis is significant)

Important disclaimer: This analysis is educational. The official radiologist's written report from the diagnostic center should be used for clinical decision-making. Please discuss these findings with a spine specialist (orthopedic surgeon or neurologist) for proper management.