Evaluation of two 3D virtual computer reconstructions for comparison of cleft lip and palate to normal fetal microanatomy.

摘要: Cleft lip and palate reconstructive surgery requires thorough knowledge of normal pathological labial, palatal, velopharyngeal anatomy. This study compared two software algorithms their 3D virtual anatomical reconstruction because exact micromorphological may improve learning, reveal spatial relationships, provide data for mathematical modeling. Transverse frontal serial sections the midface 18 fetal specimens (11th to 32nd gestational week) were used manual segmentation approaches. The first approach bitmap images either Windows-based or Mac-based SURFdriver commercial that allowed contour matching, surface generation with average slice thickness, triangulation, real-time interactive viewing. second tagged image format platform-independent prototypical SeViSe developed by one authors (F.W.). Distended compressed structures dynamically transformed. Registration was automatic but correction, such as individual section generation, permitted intuitive segmentation, easy offset showed complex relationships in real time. However, frequent crashes erroneous landmarks appearing "out blue," requiring tedious. Individual defined smoothing, unlimited structure number could not be integrated. remained underdimensioned sufficiently accurate this study's problem. number, late addition extra sections, quantified smoothing thickness; however, required more elaborate work-up SURFdriver, yet detailed reconstructions created.