Measuring orbital Volume Using Open Source Software and its Application in Orbitozygomatic Fractures

Study DesignTechnical note.ObjectiveChanges in orbital volume can lead to esthetic and functional complications of the orbit. In this article, the procedure to calculate the orbital volume using the open source software Aliza 3D DICOM is described.MethodsThis article describes the steps to use this novel software. To validate the software, the normal orbital volume was calculated bilaterally on CT scans with normal orbital anatomy. The volumes of unilateral orbitozygomatic fracture cases were compared.ResultsThis open source software has easy access. The normal orbital volume calculated using this software was 24.4 cc 0.72. In the unilateral orbitozygomatic fracture cases, an increased orbital volume was calculated.ConclusionsThis easy access, inexpensive, and convenient computer aided software can be used to calculate orbital volume facilitating treatment plan for correction of the orbit volume.