Relationship between Tongue Temperature Estimated by Infrared Thermography, Tongue Color, and Cold-Heat Pathological Patterns: A Retrospective Chart Review Study

Figure 1

Flow chart of the study. EMR: electronic medical recording; RET: right edge of the tongue; TC: tongue center; TT: tongue tip, R: red; G: green; B: blue; L: luminance; a: red/greed balance; b: yellow/blue balance; CHPQ: cold-heat pattern questionnaire; R₀: tongue center; R₁: right side of the tongue center; R₂: left side of the tongue center; R₃: tip of the tongue; R₄: center of the tongue root; R₅: right side of the tongue root; and R₆: left side of the tongue root.