Generation Of A 3D Digital Model Of Human Temporal Bone Based Clinic CT DICOM Datasets

Objective: To generate a 3D digital temporal bone model from computed tomography(CT) data.and to investigate the temporal bone model of high precision for anatomical skill training and surgery simulation by using 3-D printing technology.Methods: High resolution medical images were brought into reverse engineering software for construction. Temporal Bone based on the 1.0 mm thickness and 0.1 mm interval of CT slice medical images.Then using of the medical reconstruction software Mimics 16.0 to segment and establish the total Temporal Bone 3D digital model.After that,the model was imported into 3-Matic software to remesh and smooth.Further more,Geomagic studio software is used to carry out fixing and designing some anatomical objects of temporal bone.Results: Anatomic details of the 3D digital temporal bone model were dimensionally accurate and generally comparable to the human temporal bone.The digital model consist of mastoid,tympanic membrane,auditory ossicles,labyrinth,facial nerve,tensor tympani muscle,stapedius muscle,jugular vein,internal carotid. Some type of middle ear and mastoid micro-surgery were simulated on computer. Void space representation was excellent concordance between cadaveric dissection and virtual digital temporal bone model surgery. After modeling processed, its solid models were printed by applying the SLS or CJP technology. Then a ABS model and a Plaster model were produced.Functionally significant anatomical details could be recognized.The printed bone models are highly realistic. The material properties were as hard as real bone.Conclusion: Compared with cadaver and digital model,the digital model match the actual shapes and site.The virtual surgical imaging match cadaver dissection well.Digital model and the solid model printed provide intuitive and visual information for diagnosis and treatment and teaching, so that can research the operation program and plan.The printed bone models are highly realistic. The material properties were as hard as real bone.ABS model present more details of functionally significant anatomy than in Plaster model.For the presence of supporting powder,it was hard to recognize the anatomical details when drilled.