Gage R&R Study on Abdominal Sonography for Measuring Distance from Sangwan (CV13) to Pancreas - A Pilot Study -

복부초음파를 이용한 상완혈(上脘穴)-췌장 수직거리 측정시스템의 재현성 반복성 평가실험-A Pilot Study-

  • Nam, Dong-Hyun (Dept. of Biofunctional Medicine & Diagnosis, College of Oriental Medicine, Sangji University)
  • 남동현 (상지대학교 한의과대학 진단생기능의학교실)
  • Received : 2010.09.17
  • Accepted : 2010.10.18
  • Published : 2010.10.31

Abstract

Objectives: The objective of the current study is to determine whether an ultrasound device system is adequate for measuring distance from Sangwan (CV13) to pancreas. Methods: We recruited 3 healthy young male subjects and 2 sonographers. The each sonographer measured vertical shortest distance from CV13 to pancreas with a ultrasound device three times in random order. Because the total variation could be divided into repeatability, reproducibility and subject-to-subject variation in Gage R&R method, we compared the sources of variation associated with the measurement system with an analysis of variance model. Results & Conclusions: Number of distinct categories is calculated on the basis of standard deviation of subject-to-subject divided by standard deviation of total Gage R&R. If the number of categories is five or more, the measurement system may be acceptable for the analysis of the process. The number of distinct categories of the ultrasound device system for measuring distance from CV13 to pancreas was 6.29. So we concluded that repeatability and reproducibility of the ultrasound device system for measuring distance from CV13 to pancreas was acceptable.

Keywords

References

  1. Lou XF, Yang XD, Jiang SH, Sun CY, Zhang RF. Study on angle and depth of needle insertion in acupuncture at Zusanli (ST36). Zhongguo Zhen Jiu. 2006;26:483-486.
  2. Li YD, Yang SD, Li JN, Li L. Study on needling depth of Dazhui (GV14), Jianzhongshu (SI15), Xuanshu (GV5) and Mingmen (GV4) with CT. Zhongguo Zhen Jiu. 2005;25:863-864
  3. Yang SD, Li YD, Jiang GH, Hu NN, Cong SY. Study on needling depth of Fengfu (GV16) with CT. Zhongguo Zhen Jiu. 2008;28:47-48.
  4. Lin JG. Studies of needling depth in acupuncture treatment. Chin Med J (Engl). 1997;110:154-156.
  5. Chen HN, Lin JG, Yang AD, Chang SK. Safe depth of abdominal acupoints in pediatric patients. Complement Ther Med. 2008;16:331-335. https://doi.org/10.1016/j.ctim.2008.05.004
  6. Chen HN, Lin JG, Ying LC, Huang CT, Lin CH. The therapeutic depth of abdominal acupuncture points approaches the safe depth in overweight and in older children. J Altern Complement Med. 2009;15:1033-1037. https://doi.org/10.1089/acm.2008.0582
  7. 이승훈. Minitab 측정시스템 분석. 서울: 이레테크. 2001.
  8. Montgomery DC. Design and Analysis of Experiments, fourth ed. New York: Wiley, 1997.