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122Chapter7ABSTRACTVirtualsurgicalplanningofanopencranialvaultreconstructionenablesafaster,saferandbettersurgicalprocedureforcraniosynostosispatientsHowever,transferavirtualsurgicalplantothepatientremainschallengingAlthough3D-printedsurgicalguidescanbeused theirproductionisrathertime-consumingandexpensiveSinceaugmentedreality(AR)allowstheusertodirectlyvisualizeavirtualplanningontothepatientitcanbeusedasanalternativeByusingAR-glasses(MicrosoftHoloLens)anewAR-basedworkflowwasdevelopedandcompared withsurgicalguides to transfer thesurgicalplanson3D-printsof10patientswithdifferenttypesofcraniosynostosisAnaccuracyof21mmandameantransfertimeof824minuteswerereportedwiththeARworkflowascomparedtoanaccuracyof09mmandameantransfertimeof50secondsforsurgicalguidesSurgicalguideswerethemostfittingmethodtotransfervirtualsurgicalplans TherelativelylargeoutliersintheARworkflowmeantthatthemeanaccuracywasjustoutsidetheclinicallyacceptablemarginHowever,thelowcostandsimplicitymaketheARworkflowapromisingalternative
