cone beam international magazine of cone beam dentistry

I 31 technique _ neuromuscular application I cone beam2_2014 conventional CT, X-ray is produced as the gantry rotates the X-ray tube and detector around the patient (Fig. 2) producing an image or “slice” with each 360 degree rotation and then stacks the multiple scans and slices. In a cone beam computed tomography geome- try,theentiresubjectisexposedjustoncefromasin- gle point source using an amorphous silicon (aSi:H) flat-panel sensor, Csi, CMOS or CCD as its detector. A single rotation CBCT scan results in a volumetric scan of the entire subject with complete data ac- quisition in just two to three minutes. In March 2001, the NewTom QR-DVT 9000 be- came the first CBCT system to receive FDA approval in the United States (Fig. 3). Followed in 2003 by the ImagingSciencesInternationali-CATincorporating Fig. 5_NewTom VGTM . Figs. 6 & 7_Three-dimensional rendering and the maximum intensity projection will undoubtedly demand new cephalometric landmarks and analyses. Fig. 8_Treatment arch widths. Fig. 9_Actual impacted dentition orientation in three dimensions. Fig. 10_Upper airway evaluation. Fig. 11_Pharyngeal volumetric airway evaluation. Fig. 12_TMJ morphology and condylar position. Fig. 8Fig. 7 Fig. 5 Fig. 6 Fig. 12Fig. 11 Fig. 9 Fig. 10