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MRI-based formula on CT scans accurate at predicting glenoid width
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Researchers of this study found use of an MRI-based formula on CT scans was nearly as accurate as CT-specific formulas to predict glenoid width in shoulders with instability-related bone loss.
For the descriptive laboratory study, researchers analyzed 90 normal shoulder CT scans with preserved osseous anatomy from an existing database. Two observers measured glenoid height and width on 3-D models. Researchers created regression models for shoulders of male and female patients after assessment of reliability and data correlation, and compared the accuracy of the MRI-based model’s prediction with the CT-based models.
Results showed good to excellent intra- and interrater reliabilities for height and width, as well as a strong correlation of 0.9 among the height and width values. Researchers found good agreement in comparison of prediction from the MRI- and CT-specific formulas, with the CT-specific formulas producing a root mean squared error of 1.2 mm vs. a root mean squared error of 1.5 mm following applications of the MRI-specific formula to CT images. – by Casey Tingle
Disclosure: Giles reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.
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