Comparative Analysis of Accuracy between Computerized Tomography and Cephalogram for 3-Dimensional Measurement of Maxillofacial Structure / 영남의대학술지
Yeungnam University Journal of Medicine
;
: 123-137, 2001.
Artigo
em Coreano
| WPRIM
| ID: wpr-45843
ABSTRACT
BACKGROUND:
The purpose of this study is to evaluate the accuracy of measurements obtained from 3-dimensional computerized tomography and 3-dimensional cephalogram constructed by using the frontal and lateral cephalogram of six human dry skulls. MATERIALS ANDMETHODS:
After CT scans and each cephalograms were taken, 3-dimensional coordinates (X, Y, Z) of landmarks were obtained using computer programs. In this study, the accuracy of both methods were determined by means of 14 linear measurements compare with caliper measurements.RESULTS:
The standard deviation of landmarks of 3-dimensional CT and 3-dimensional cephalogram were 0.23 mm and 0.30 mm in X axis, 0.27 mm and 0.25 mm in Y axis, and 0.27 mm and 0.31 mm in Z axis. In both methods, the standard deviation were less than 0.5 mm in all landmarks, and the most of landmarks showed less than 1 mm in range. Concerning the accuracy, the mean difference between 3-dimensional CT and manual measurements was 0.33 mm, and 1.13 mm between 3-dimensional cephalogram and manual measurement. The distance between RGo and LGo showed the largest difference (2.23 mm). There were highly significant, and large correlation with manual measurements in both methods (p<0.01).CONCLUSION:
It is concluded that closeness of repeated measurements to each skulls reveal the precision of both methods. Computerized tomography and cephalogram for 3-dimensional measurement of maxillofacial structure are equivalent in quality to caliper measurements.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Crânio
/
Vértebra Cervical Áxis
/
Tomografia Computadorizada por Raios X
Limite:
Humanos
Idioma:
Coreano
Revista:
Yeungnam University Journal of Medicine
Ano de publicação:
2001
Tipo de documento:
Artigo
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