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The reliability of "Analyze" software in measuring orbital volume utilizing CT-derived data
David Andrew Koppel1, Richard Hirsch Foy, James Anthony McCaul
1West of Scotland Regional Maxillofacial Unit, Southern General Hospital, Glasgow, UK.
Summary
Software analysis of computerized tomography (CT) scans for orbital volume estimation showed significant inaccuracies. The "Analyze" software results varied widely from the gold standard, proving insufficient for clinical use in craniomaxillofacial surgery.
Area of Science:
- Medical Imaging
- Craniomaxillofacial Surgery
- Quantitative Analysis
Background:
- Craniomaxillofacial surgeons need accurate orbital volume estimation for various clinical scenarios.
- Current methods may lack precision, necessitating novel approaches.
Purpose of the Study:
- To evaluate a new method for estimating orbital volume using software analysis of computerized tomography (CT) scan data.
- To assess the accuracy of the "Analyze" software for this purpose.
Main Methods:
- Five dried skulls with prosthetic globes and periorbita were scanned using an Elscint 2400 CT scanner.
- Images were processed with "Analyze" software.
- Results were compared to a gold standard volume displacement gravimetric method.
Main Results:
- Software-generated volume estimates showed a wide variation from the gold standard, ranging from 0.06% to 50.44%.
- The mean error in volume estimation was 8.8%.
Conclusions:
- The "Analyze" software, even with varied scan protocols, did not achieve sufficient accuracy for clinical application in orbital volume estimation.
- Further development or alternative methods are required for precise clinical measurements.