3차원 전산화단층촬영 영상을 이용한 안면 연조직 두께 계측의임상적 유용성

• Published in: Imaging science in dentistry pp. 89 - 94
• Main Authors: 정호걸, 김기덕, 한승호, 허경석, 이제범, 박혁, 최성호, 김종관, 박창서
• Format: Journal Article
• Language: Korean
• Published: 대한영상치의학회 01.06.2006
• Subjects: 치의학
• ISSN: 2233-7822; 2233-7830

Purpose : To evaluate clinical usefulness of facial soft tissue thickness measurement using 3D computedtomographic 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. (Korean J Oral Maxillofac Radiol 2006; 36 : 89-94) KCI Citation Count: 0