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206Chapter12CARDIOTHORACICSURGERYDuringtranscatheteraorticvalveimplantation(TAVI)proceduresareplacementaorticvalveisplacedoverthenativevalveviaacatheterinthefemoralarteryTomaximisesafetypreciseTAVIpreplanningisrequiredwhichconsistsofselectingthebestfittingvalveaswellasdeterminingwhatroutetotheheartistheleasttortuoushastheleastcalcificationsandhasthewidestdiameterThesecharacteristicsaresometimeshardtointerpretin2D3DARvisualizationcanovercometheselimitationsandimprovethepre-operativeplanningandpreparationoftheseproceduresSpecialsoftwaretoolsweredevelopedbyourARteamtomeasuretheangulationlengthtrajectoriesanddiameterofarteriesin3DComparedtoconventional TAVIplanningon2Dslicestheintuitivenessand3DvisualizationcapabilitiesofARprovidedimportantbenefitswhenpreparingforthisprocedure17AtthismomentthecreationoftheTAVIARmodelrequiresapreparationtimeofsixhoursFutureresearchshouldaimtoreducethistimetoamaximumof30minutestoensureimplementationofthisapplicationinthestandardclinicalworkflowFigure4ARplanningoftranscatheteraorticvalveimplantation(TAVI)DiametervariationsalongtheaortacanbevisualizedandmeasuredKIDNEYSURGERYInadditiontothediscussioninChapter5regardingtheaddedvalueofARvisualizationforthepreparationofrenaltumorremovalrecent(unpublished)research at thePrincessMáxima Center(PMC)proved thatusing 3Dmodels and ARvisualizationimprovedthemultidisciplinarycollaborationofcareprofessionals18SincethisstudytheuseofARmodelshasbecomestandardcareforeverypatientinthePMCwithrenaltumorsInthisproceduredifferentanatomicalstructuresaresegmentedfromanMRIscanandaspeciallydevelopedMRIsequence
