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KMID : 1003820160200020051
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Journal Of The Korea Institute Of Oriental Medical Diagnostics
2016 Volume.20 No. 2 p.51 ~ p.65
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Standard Operating Procedure of Tongue-image Analysis System to Improve the Reliability
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Lee Hyeon-Joo
Kim Su-Ryun
Nam Dong-Hyun
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Abstract
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Objectives: This study was conducted to suggest a standard operating procedure (SOP) in order to improve the reliability of tongue-image analysis system.
Methods: An affecting-factors list was made, which may affect the diagnostic parameters of the tongue-image analysis system. They were sub-classified into two groups: controllable and uncontrollable. Only the controllable factors, which could affect the results and easily set-up, were included into the SOP draft. Affecting factors control experiment was performed to investigate the effects of controllable factors, whose influence on diagnostic parameters of the tongue-image analysis system is ambiguous: rehearsal for tongue extrusion; alignment of camera axis; and presentation of a guideline. Three subjects volunteered for this experiment. Each of three variables was implemented twice in a random order by two operators on the subjects. Finally, 96 tongue images obtained in the aggregate. The diagnostic parameter set as a primary outcome in this experiment was the percentage of tongue coating.
Results: All of the control variables were not significant in both operators; however, the presentation of a guideline was relatively more affect than two other variables. Interaction effects among the variables were also insignificant. Therefore, the presentation of a guideline was included in the final SOP and the other variables were not included.
Conclusions: We suggested the SOP which could be used for both experimenter and subject. Moreover, Each of the SOPs applied to various types of tongue-image analysis system should be developed in order to improve the reliability.
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KEYWORD
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tongue , diagnosis , tongue diagnosis , reliability , standard operating procedure
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