Clinical usefulness of facial soft tissues thickness measurement using 3D computed tomographic images.
- Author:
Ho Gul JEONG
1
;
Kee Deog KIM
;
Seung Ho HAN
;
Kyung Seok HU
;
Jae Bum LEE
;
Hyok PARK
;
Seong Ho CHOI
;
Chong Kwan KIM
;
Chang Seo PARK
Author Information
1. Department of Oral & Maxillofacial Radiology, Oral Science Research Center, College of Dentistry, Yonsei University, Korea. kdkim@yumc.yonsei.ac.kr
- Publication Type:Original Article
- Keywords:
Facial Soft Tissue Thickness;
Measurement;
Imaging, Three-Dimensional;
Tomography, X-ray Computed;
Slice Thickness
- MeSH:
Cadaver;
Imaging, Three-Dimensional;
Microcomputers;
Tomography, Spiral Computed;
Tomography, X-Ray Computed
- From:Korean Journal of Oral and Maxillofacial Radiology
2006;36(2):89-94
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate clinical usefulness of facial soft tissue thickness measurement using 3D computed tomographic images. MATERIALS AND METHODS: One cadaver that had sound facial soft tissues was chosen for the study. The cadaver was scanned with a Helical CT under following scanning protocols about slice thickness and table speed; 3 mm and 3 mm/sec, 5 mm and 5 mm/sec, 7 mm and 7 mm/sec. The acquired data were reconstructed 1.5, 2.5, 3.5 mm reconstruction interval respectively and the images were transferred to a personal computer. Using a program developed to measure facial soft tissue thickness in 3D image, the facial soft tissue thickness was measured. After the ten-time repeation of the measurement for ten times, repeated measure analysis of variance (ANOVA) was adopted to compare and analyze the measurements using the three scanning protocols. Comparison according to the areas was analyzed by Mann-Whitney test. RESULTS: There were no statistically significant intraobserver differences in the measurements of the facial soft tissue thickness using the three scanning protocols (p>0.05). There were no statistically significant differences between measurements in the 3 mm slice thickness and those in the 5 mm, 7 mm slice thickness (p>0.05). There were statistical differences in the 14 of the total 30 measured points in the 5 mm slice thickness and 22 in the 7mm slice thickness. CONCLUSION: The facial soft tissue thickness measurement using 3D images of 7 mm slice thickness is acceptable clinically, but those of 5 mm slice thickness is recommended for the more accurate measurement.
