2006 Volume 44 Issue 3 Pages 364-370
The limited cone beam X-ray CT (3 DX) is an epoch-making device that brings three dimensional analysis to the field of odontology using computed topography. The information obtained from this device, however, is the 2 dimensional fault image roentgenopraphic information but the immediate three dimensional data could not be obtained.
The authors therefore developed an application which was able to convert information from the 3 DX and construct general purpose 3 dimensional data of the radiated object. When the accuracy was measured using a large cube (all sides being 20 mm) and a small cube (all sides being 10 mm) for measurement, the following results were obtained.
1. No significant difference was found in actual length and the length that the application had calculated was roughly within a discrepancy of 0.25 mm.
2. No significant difference was found in the margin of error based on the size of the cube.
As a result, this application was able to convert the 3 DX data into 3 dimensional data with good accuracy. Due to this, it is now possible to grasp the three dimensional analysis of the radiated object and the image which had been difficult with the conventional 3 DX. It was suggested that this will further increase the utility of the 3 DX.
