The comparison of cephalometric measurements between measuring methods in digital and conventional lateral cephalometric radiograph.
- Author:
Mi Ja KIM
1
;
Kyung Hoe HUH
;
Won Jin YI
;
Min Suk HEO
;
Sam Sun LEE
;
Jin Koo LEE
;
Byoung Keun AHN
;
Soon Chul CHOI
Author Information
1. Department of Oral and Maxillofacial Radiology, Dental Research Institute, and BK21, College of Dentistry, Seoul National University, Korea. raychoi@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Cephalometry;
Image Processing;
Computer-Assisted;
Digital Radiography
- MeSH:
Cephalometry;
Radiographic Image Enhancement
- From:Korean Journal of Oral and Maxillofacial Radiology
2005;35(1):15-24
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To compare cephalometric measurement between measuring methods in digital and conventional lateral cephalometric radiograph. MATERIALS AND METHODS: Twenty digital and conventional lateral cephalometric radiographs were selected. In digital group, cephalometric measurements were performed manually using hardcopies and automatically using VCeph(TM) program on the monitor. In conventional group, the same measurements were performed manually on conventional films, and for automatic measurement conventional films were digitized by scanner. All measurements were performed twice by 4 observers, and 24 cephalometric variables were calculated and the time spent for each measurement was recorded. The differences in measurements data and the time spent for each measurement were compared within each group. Intra-observer and inter-observer comparisons were performed. RESULTS: In both groups, no statistically significant difference between manual and automatic measurements was observed and most of the variables didn't show statistically significant differences between methods. The observer with less experience tended to show statistically significant differences of measurements between methods, and differences from other observers. The differences of measurements between methods in digital group were lesser than those of conventional group with statistical significance in 8 variables out of 24. With automatic method and in digital group, the spent time was shorter. CONCLUSION: With direct digital radiograph, automatic method using manually idenitified landmarks can be preferable in cephalometric analysis.
