Multi-parameter evaluation of lumbar intervertebral disc degeneration using quantitative magnetic resonance imaging...

Area of Science:

• Radiology
• Biomedical Engineering
• Orthopedics

Background:

• Lumbar disc degeneration is a common cause of low back pain.
• Current semi-quantitative MRI classifications may not fully capture early degenerative changes.
• Quantitative MRI techniques offer potential for more objective assessment.

Purpose of the Study:

• To quantitatively evaluate lumbar disc degeneration using novel MRI techniques.
• To compare T2*, T1rho, ADC, and gagCEST parameters with the Pfirrmann classification.
• To identify the most accurate MRI parameters for assessing lumbar disc degeneration.

Main Methods:

• Thirty-seven patients with chronic low back pain were enrolled.
• Quantitative MRI parameters (T2*, T1rho, ADC, gagCEST) were measured for L1/2-L5/S1 discs.
• MRI parameters were correlated with the Pfirrmann semi-quantitative classification.

Main Results:

• The gagCEST value demonstrated the strongest negative correlation with disc degeneration (nucleus pulposus: r = -0.951; annulus fibrosus: r = -0.938).
• gagCEST achieved the highest discriminant accuracy (82%) as a single index for classifying degeneration.
• Other quantitative MRI parameters showed varying degrees of correlation with degeneration.

Conclusions:

• Chemical exchange saturation transfer (gagCEST) MRI is a sensitive technique for quantitatively evaluating early lumbar disc degeneration.
• gagCEST provides an objective and accurate method for assessing disc health.
• Quantitative MRI holds promise for improved diagnosis and management of degenerative disc disease.