3차원 전산화단층촬영 영상을 이용한 안면 연조직 두께 계측의 임상적 유용성 = Clinical usefulness of facial soft tissues thickness measurement using 3D computed tomographic images

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

1 "한국인 얼굴복원 (facial reconstruction) 에 관한 연구. I. 한국인 얼굴두께" 1998

2 "Ultrasonic assessment of facial soft tissue thicknesses in adult Egyptians" 117 : 99-107, 2001

3 "Three-dimensional image analysis of the skull using variable CTscanning protocols-effect of slice thickness on measurement in the three-dimensional CT images" 34 : 151-157, 2004

4 "Three-dimensional CT reconstruction images for craniofacial surgical planning and evaluation" 150 : 179-84, 1984

5 "Thickness of facial tissues in the American Blacks" 25 : 847-58, 1980

6 "The lateral craniographic method of facial reconstruction" 32 : 1305-30, 1987

7 "The human skeleton in forensic medicine" 28-142, 1986

8 "Quantitative evaluation of the accuracy of 3D imaging with multi-detector computed tomography using human skull phantom" 14 : 131-140, 2003

9 "Quantitative evaluation of acquisition parameters in three-dimensionalimaging with multidetector computed tomography using human skull phantom" 15 : 254-257, 2002

10 "Principles of facial reconstruction Forensic analysis of the skull" 1993183-98

11 "Optimal pitch in spiral computed tomography" 24 : 1635-1639, 1997

12 "Measurements of the Korean facial thickness" 23 : 117-121, 1999

13 "Measurement of facial soft tissues thickness using 3D computedtomographic images" 36 : 49-54, 2006

14 "In vivo measurements of facial tissue thicknesses in American caucasoid children" 30 : 1100-12, 1985

15 "Imaging orofacial tissues by magnetic resonance" 68 : 2-8, 1989

16 "Forensic analysis of the skull" 97-104, 1993

17 "Facial soft-tissue thicknesses in the adult male Zulu" 79 : 83-102, 1996

18 "Facial reconstruction:utilization of computerized tomography to measure facial tissue thickness in a mixed racial population" 83 : 51-59, 1996

19 "Accuracy of facial soft tissue thickness measurements in personal computer-based multiplanar reconstructed computed tomographic images" 155 : 28-34, 2005

20 "A two-dimensional coordinate model for the quantification prediction and simulation of cranio-facial growth" growth1971191-211