Differences in perfusion parameters between upper and lower lumbar vertebral segments with dynamic contrast-enhanced...

Area of Science:

• Radiology
• Medical Imaging
• Bone Marrow Imaging

Background:

• Dynamic Contrast-Enhanced MRI (DCE MRI) is a valuable tool for assessing tissue perfusion.
• Understanding normal perfusion parameters in lumbar bone marrow is crucial for interpreting pathological changes.
• Factors like age, sex, and spinal level may influence bone marrow perfusion.

Purpose of the Study:

• To investigate the impact of age, sex, and spinal level on perfusion parameters in normal lumbar bone marrow using DCE MRI.
• To establish reference ranges for lumbar bone marrow perfusion in a healthy population.
• To identify potential variations in perfusion that could affect diagnostic interpretations.

Main Methods:

• Sixty-seven subjects with low back pain or sciatica underwent lumbar spine DCE MRI.
• Regions of interest (ROIs) were placed on lumbar vertebral bodies to generate time-intensity curves.
• Perfusion parameters were calculated and statistically analyzed for differences based on age, sex, and vertebral level (L1-L5).

Main Results:

• Significant differences in perfusion parameters were observed between upper (L1, L2) and lower (L3-L5) lumbar vertebrae.
• Subjects younger than 50 years demonstrated significantly higher lumbar bone marrow perfusion than older subjects.
• Females exhibited significantly increased perfusion compared to age-matched males.

Conclusions:

• Lumbar bone marrow perfusion varies significantly with spinal level, age, and sex.
• Upper lumbar vertebrae show higher perfusion than lower lumbar vertebrae.
• Age and sex are important determinants of normal lumbar bone marrow perfusion, with younger individuals and females showing increased perfusion.