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Published on: June 12, 2020
High-resolution peripheral QCT imaging of bone micro-structure in adolescents
1Department of Orthopedics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada. Melonie.burrows@ubc.ca
Summary
High-resolution peripheral quantitative computed tomography (HR-pQCT) is a safe and feasible method for assessing adolescent bone microstructure. This technique provides clear images with low radiation doses, aiding in the study of bone development.
Area of Science:
- Orthopedics and Sports Medicine
- Radiology and Imaging
- Pediatric Bone Health
Background:
- Assessing bone microstructure in adolescents is crucial for understanding bone strength development.
- High-resolution peripheral quantitative computed tomography (HR-pQCT) offers a potential method for this assessment.
Purpose of the Study:
- To evaluate the feasibility and safety of using HR-pQCT to assess tibial bone microstructure in adolescents.
- To determine optimal scanning parameters for adolescent bone imaging.
Main Methods:
- The XtremeCT (Scanco Medical) system was utilized to scan the distal tibia in 278 participants aged 15-20 years.
- A region of interest (ROI) at 8% of tibial length was employed, ensuring active growth plates were excluded.
Main Results:
- Scans were completed in 2.8 minutes with a low radiation dose (<3 microSv) and produced artifact-free images.
- The 8% ROI (33 +/- 2 mm) successfully excluded the growth plate (located at 13 +/- 2 mm).
- Active growth plates were identified in 33 participants.
Conclusions:
- HR-pQCT is a safe and effective tool for evaluating key bone microstructure elements in adolescents.
- Understanding bone geometry and structure development in cortical and trabecular compartments is vital for bone health.
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