To evaluate the value of L1 cortical bone quantitative CT parameters in predicting osteoporosis
Qianqian Yao1,2, Qiufeng Yao3, Jian Qin2
1Graduate School, Tianjin Medical University, Tianjin, China.
Frontiers in Medicine
|May 11, 2026
Summary
Cortical bone thickness and area in the first lumbar vertebra decrease with age and lower bone density. These CT-measured parameters show potential for detecting osteoporosis in both men and women.
Area of Science:
- Osteoporosis Research
- Bone Densitometry
- Spinal Imaging
Background:
- Osteoporosis is a growing public health concern, characterized by decreased bone mineral density and increased fracture risk.
- Accurate assessment of bone health, particularly cortical bone, is crucial for early diagnosis and effective management of osteoporosis.
- Computed tomography (CT) offers advanced capabilities for quantitative bone analysis, including cortical bone assessment.
Purpose of the Study:
- To investigate the relationship between age, sex, and volumetric bone mineral density (vBMD) with the cortical bone of the first lumbar vertebral body (L1).
- To evaluate the predictive value of quantitative CT measurements of L1 cortical bone for detecting osteoporosis.
Main Methods:
- Retrospective analysis of 169 participants undergoing CT and quantitative CT (QCT) scans.
- Participants stratified by sex and age groups (50-59, 60-69, ≥70 years).
- L1 cortical bone parameters (average density, thickness, area, total volume) measured using a CT spinal bone quantification system; categorized into non-osteoporosis and osteoporosis groups based on QCT.
Main Results:
- L1 cortical bone thickness, area, and total volume showed statistically significant decreases with increasing age and decreasing vBMD in all participants and the female subgroup.
- In males, the area under the ROC curve (AUC) for detecting osteoporosis was highest for total volume (0.84), followed by average area (0.83) and average thickness (0.77).
- Average area demonstrated the highest specificity (90.00%) for osteoporosis detection, while average thickness showed the highest sensitivity (82.89%) in males, with similar trends in females.
Conclusions:
- Quantitative CT parameters of L1 cortical bone exhibit a decreasing trend with advancing age and reduced vBMD.
- These measurements hold potential as valuable tools for the detection and assessment of osteoporosis.
