抄録
The main office based 3D-CTs, the Accuitomo, CB Throne, CB MercuRay and xCAT ENT, were reviewed in the eight ones manufactured by the six companies in the world: are of floor for place, resolution, Field of view, etc.. Of the four, the accuitomo was used in our office. To obtain clear view of stapes, reconstructions were repeated in two steps.
First step: on the coronal image, the slope of the stapes was turned from oblique to horizontal.
Second step: on the axial image, the slope of the stapes was turned from oblique to horizontal. Then the crura of the sapes were displayed on the sagittal image. In the same way, two cases (i.e. stapes fixation and deficit of superstructure of stapes) were presented. Multi-Slice CT (MSCT) blurs fine and minute bony structures. Artifacts due to implanted metal reduce the diagnostic accuracy based on MSCT. To eliminate such shortcomings of MSCT, a high resolution cone beam CT (CBCT) scanner with a flat panel detector, named Accuitomo, has been developed. The Accuitomo can provide detailed and clear images of stapes in the temporal bone.
