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International Journal of Computerized Dentistry

Year 2004
Volume 7 , Issue 4

Pages: 339 - 345

Holographic Face Models as Planning Tool in Maxillofacial Surgery

R. A. Michkowski/J. Bongartz/D. Giel/S. Frey/A. Thelen/P. Hering

The holographic facial profile scan is a new technique for creation of high-resolution, three-dimensional, realistic facial computer models which can be used for surgical planning and documentation in maxillofacial surgery. First, a holographic image of the patient is recorded using a pulsed laser system. In a second step, called holographic tomography, the real image of the patientís hologram is reconstructed by means of a continuous-wave laser. By moving a screen through the real three-dimensional image, it is sliced into a series of two-dimensional projections which are captured with a digital camera. The slices containing the specific two-dimensional information are superimposed to a three-dimensional surface model using special software. The extremely short exposure time of 35 nanoseconds for taking a holographic image is separated from the time-consuming rendering process of the surface model; thus, the obtained models are not affected by the movements of the patient.


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