IM0210

12 I I user report _ 3-D diagnostics Fig. 2_ DVT phantom in a volume tomograph (Kodak 9000 3d, small volume) fixated on the original patient biting aid. Fig. 3_ Device settings: With the aid of the light visors, a volume is placed on the region to be depicted (here region 26 and maxillary sinus floor). Fig. 4_ DVT phantom image of the maxilla with the X-ray phantom. Fig. 5_ DVT phantom image of the mandible with the X-ray phantom. implants2_2010 the X-ray image; these teeth have been made by the manufacturerespeciallyforX-rayapplications. The DVT platform is now mounted in the device with the original biting aid/support instead of a pa- tient. The device setting can occur in two different ways: a) Thedesiredvolumeispresetusingthedevicepro- gram and then manually fine-tuned. b) Thedeviceismanuallysetdirectlyontheregionto be depicted with the aid of the light visors. Then the set positioning is saved. _Using the DVT phantom for training and practice purposes With the aid of the DVT phantom and the above- mentioned setting techniques, new users or col- leagues seeking technical qualifications can learn howtosetthedevicefortheregionstobeexamined, generate one or more individual images using the “preview function” and check to see if the setting was correct. In the event of incorrect settings, a bet- ter image can be immediately generated so that there is a direct learning curve. _Using the DVT phantom for preparing a patient image Time-consuming and tedious setting (“aiming”) of the volume on a patient who is already in the de- vice is not something that will generally meet with the patient’s whole-hearted agreement. This is where presetting the device with the aid of the DVT phantom comes in handy. The desired region is de- picted with the phantom and, if needed, is checked with the preview function. Then the phantom is re- moved, and the patient is fetched and positioned in the device. Generally, only one device setting for the patient’s body size and small fine-tuning are re- quired and the image is set. _How to obtain a DVT phantom Such a DVT phantom can be produced in cooper- ation with practicing dental technicians, the barium sulfate-containing plastic teeth are available on the market and a phantom can be made in the manner described above. An easier option is to send a DVT positioning aid of your device to www.dtcm- freiburg.deor dtcmfreiburg@aol.com.MasterDen- tal Technician Christian Müller will then mount a prepared DVT phantom on your positioning aid. In- dustrially manufactured barium-sulfate-contain- ing plastic teeth (SR Vivo Tac/SR Ortho Tac, Ivoclar Vivadent) will be used which are then incorporated intoamandibularandmaxillarmodelmadeoftrans- parent plastic. The authors of this article hope that the fascinat- ingfieldof3-Ddiagnosticswillestablishitselfquickly indentistryandthatitwillremainanimagingproce- dure that significantly expands upon the hitherto range of dental X-ray diagnostics in the long term._ Fig. 2 Fig. 3 Fig. 4 Fig. 5 Dr Georg Bach Rathausgasse 36 79098 Freiburg im Breisgau,Germany E-mail: doc.bach@t-online.de 1 DDS; specialist in oral sur- gery 2 Diploma Master Dental Technician 3 Bachelor DentalTechni- cian _contact implants

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