A promising diagnostic method: Terahertz pulsed imaging and spectroscopy

Figure 12 In vivo measurement of the variation in stratum corneum thickness of the palm. A: Photograph of the palm, indicating where the THz measurements were taken; B: A b-scan image showing the variation in stratum corneum thickness with palm position. The white dashed line indicates the interface between the quartz window and the stratum corneum; and the black dashed line indicates the interface between the stratum corneum and the epidermis. The grey bar represents the ratio of the electric field at a given optical delay, t, over the maximum electric field [E(t)/Emax].