X-ray-based quantitative osteoporosis imaging at the spine.

Area of Science:

• Medical Imaging
• Orthopedics
• Radiology

Background:

• Osteoporosis is a prevalent metabolic bone disease, especially in the elderly.
• Fractures due to bone fragility often lead to clinical osteoporosis diagnosis.
• Early detection is vital for timely therapy and fracture prevention, reducing mortality.

Purpose of the Study:

• To review and evaluate recent advancements in X-ray-based quantitative imaging for osteoporosis.
• Focus on spinal imaging techniques for osteoporosis assessment.

Main Methods:

• Discussion of standard dual-energy X-ray absorptiometry (DXA) and trabecular bone score (TBS).
• Evaluation of quantitative computed tomography (QCT), including dual-energy BMD quantification.
• Exploration of opportunistic BMD screening from routine CT scans.
• Review of finite element analysis and microstructural parameter analysis.

Main Results:

• DXA remains a reference standard, enhanced by TBS.
• QCT offers 3D advantages and opportunistic screening potential.
• Advanced analyses like finite element analysis provide deeper insights.

Conclusions:

• X-ray imaging modalities are essential for osteoporosis fracture risk assessment.
• DXA and QCT represent key tools, with QCT showing promise for opportunistic screening.
• Emerging quantitative imaging techniques offer improved osteoporosis evaluation.