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디지털 및 일반 측방두부규격방사선사진에서 측정 방법에 따른 계측치의 비교
The comparison of cephalometric measurements between measuring methods in digital and conventional lateral cephalometric radiograph

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Authors
김미자; 허경회; 이원진; 허민석; 이삼선; 이진구; 안병근; 최순철
Issue Date
2005
Publisher
대한구강악안면방사선학회
Citation
대한구강악안면방사선학회지 2005; 35 : 15-23.
Keywords
CephalometryImage ProcessingComputer-AssistedDigital Radiography
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 V-CephTM 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. (Korean J Oral Maxillofac Radiol 2005; 35 : 15-23)
ISSN
1229-8212
Language
Korean
URI
http://hdl.handle.net/10371/47392
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College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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