抄録
Owing to the rapid development of the computer-assisting systems, the digital data derived from various medical devices have been more useful in diagnosis and treatment planning. Recently 3D-CT system has been widely used, which can offer clear three-dimensional images with high quality in accuracy and reality. The system is not so generalized, however, that the practitioner can utilize it freely by himself at his convenience. In the present study, therefore, three-dimensional reconstruction of the digitalized medical images from CT data was tried using a standard personal computer in order to get concrete information of the internal structure of the body on the practitioner's display readily at any time needed. The sequence CT-images of human mandibles were prepared and converted into the standard image format for PC. The hardware configuration used consists of a NEC PC9821 with Pentium 133 MHz, 64 MB RAM. The software used for the 3D-reconstruction is Scion Image which is based on NIH Image for Macintosh image processing. The 3D-reconstructed model could realistically show a panoramic view of mandible body. At its any part, the shape of the bone surface as well as the anatomical landmarks was well observed. Besides, it could be rotated on the CRT display, and the morphological structure of the mandibles could be spatially examined. The digital image processing developed in this study was also found to be available for other applications such as the multi planer reconstruction and the interior analysis of windowed area.
