Correction to: Material Mapping of QCT-Derived Scapular Models: A Comparison with Micro-CT Loaded Specimens Using Digital Volume Correlation | JoVE Visualize

Correction to: Material Mapping of QCT-Derived Scapular Models: A Comparison with Micro-CT Loaded Specimens Using Digital Volume Correlation

Nikolas K Knowles^1,2,3,4, Jonathan Kusins^5,6,7, Mohammadreza Faieghi⁸

¹School of Biomedical Engineering, The University of Western Ontario, London, ON, Canada. nknowle@uwo.ca.

Annals of Biomedical Engineering|August 22, 2019

View abstract on PubMed

Summary

This study compares quantitative CT (QCT) derived scapular models with micro-CT scans. Digital Volume Correlation (DVC) was used to map material properties, revealing differences between the two imaging methods.

Area of Science:

Biomechanics
Medical Imaging
Materials Science

Background:

Quantitative CT (QCT) is increasingly used for bone imaging.
Micro-CT offers higher resolution but is typically limited to smaller samples.
Accurate material mapping is crucial for understanding bone mechanics.

Purpose of the Study:

To compare material mapping of scapular models derived from QCT with those from micro-CT.
To assess the accuracy of Digital Volume Correlation (DVC) in mapping material properties from QCT data.

Main Methods:

Scapular specimens were scanned using both QCT and micro-CT.
Digital Volume Correlation (DVC) was applied to analyze the strain and displacement fields.
Material properties were mapped based on the DVC results for both QCT and micro-CT data.

Main Results:

Significant differences were observed in material mapping between QCT-derived and micro-CT loaded specimens.
DVC analysis revealed variations in local stiffness and deformation patterns.
The study highlights potential discrepancies when using QCT for detailed material property analysis.

Conclusions:

Material mapping from QCT models may not fully replicate the detailed mechanical behavior observed with micro-CT.
Careful consideration of imaging modality is necessary for accurate biomechanical analysis of the scapula.
Further research is needed to refine QCT-based material mapping techniques.