TI : Comparison of image reformation using personal computer with CT scan reconstruction
AU : Jung GH; Kim EK; Kim SJ
AD : Department of Oral and Maxillofacial Radiology, Dental School Department. of Diagnostic Radiology, Medical School, Dankook University
SO : JKAOMFR, 1994;24(2):361-367
ISSN : 1225-049X
PY : 1994
LA : KOREAN
CP : KOREA
AB : Radiographic planning is needed for implant placement in order to determine implant length, jaw bone volume, anatomical structure and so on. Radiographic examination includes conventional radiography, conventional tomography and CT scan. The most accurate measurement can be obtained from CT scan. For the cross-sectional view of mandible, CT scan reconstruction is generally needed. But the cross-sectional view of mandible can be reformed by personal computer. This study was performed to examine the clinical usefulness of reformed image using personal computer in comparison with CT scan reconstructed image. CT axial slices of 4 mandibles of 4 volunteers were used. Digital imaging system was composed of Macintosh II ci computer, high resolution Sony XC-77 CCD camera, Quick Capture frame grabber board and "NIH Image" program. Seven reconstructed cross-sectional images within CT machine(CT group) were obtained. And seven reformed cross-sectional images(PC group) after digitization of CT axial slices into the personal computer were obtained. PC group was compared with CT group in the objective and subjective aspects.
The results were as follow:
1. Measurement of mandibular height & width in both group showed insignificantdifference(P>0.05).
2. Subjective assessment of the mandibular canal in both group showed insignificant difference (P>0.05).
3. Image reformation using personal computer could provide panoramic view, which could not be obtained in CT scan reconstruction.