Meulen, D.P. ter (2014) Validation of quantitative surface area and volume measurement and analysis of glenoid fractures using three-dimensional computed tomography models. thesis, Medicine.
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Abstract
Purpose: To assess the accuracy of quantitative three-dimensional computed tomography surface area and volume measurement. To apply quantitative three-dimensional computed tomography measurements to a series of glenoid fractures to describe the average articular surface area and volume of glenoid fracture fragments. Materials and Methods: Ten geometric objects were manually measured and subsequently surface area and volume were calculated. Computed tomography images of the objects were acquired in 3 different slice-thicknesses to create three-dimensional models with 3D Slicer. The difference between the manual measurements and the quantitative three-dimensional computed tomography measurements was tested for statistical significance. The precision of measurements was presented as the average absolute relative error. The influence of slice thickness on surface area and volume measurements was statistically tested. Three-dimensional computed tomography models of a series of 53 patients with glenoid fractures were created. Fracture fragments were digitally reduced and surface area and volume of the fragments was quantitatively measured and presented in relation to the total glenoid. Results: There was no significant difference between the manual measurements and the quantitative three-dimensional computed tomography measurements of the geometric objects for all 3 slice-thicknesses for both surface area and volume. Quantitative three-dimensional computed tomography measurement was applied to a series of fractured glenoids. The mean percentage of fractured articular surface area compared tot the total articular surface was 17% for the 28 anterior fractures; 15% for the 3 posterior fractures; 63% for the 14 transverse or oblique fractures; and 57% for the 8 multi fragmentary fractures. The mean percentage of fracture volume compared to the total volume was 19% for the 28 anterior fractures; 25% for the 3 posterior fractures; 60% for the 14 transverse or oblique fractures; and 58% for the 8 multi fragmentary fractures. Conclusion: Based upon the results of this study both surface area and volume can be measured accurately using quantitative three-dimensional computed tomography models. This method was applied to a series of glenoid fractures. We conclude quantitative three-dimensional computed tomography analysis is a feasible method to describe fracture morphology. The results of this study might aid in a better understanding of glenoid fractures.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Diercks, R.L. |
| Supervisor name: | Ring, D. and Massachusetts General Hospital and Boston |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:39 |
| Last Modified: | 25 Jun 2020 10:39 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/115 |
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