Theoretical analysis of photoacoustic effects in a multilayered skin tissue model

Due to its noninvasiveness, high resolution, and sensitivity, photoacoustic imaging has developed rapidly in the field of biomedicine. However, research on dermatosis detection by is still lacking. In this paper, skin modeled as a multilayer planar medium based non-homogeneous, complex layered structure tissue. Then, analytical expression for signal tissue was derived under assumption that thermal optical parameters do not vary with temperature. The only considers influence optical, thermal, mechanical but also, first time, number layers signal. containing also given. numerical simulation results show difference between seven-layer model single-layer 15.206 × 10−6 MPa when ω = 3.5 MHz μa 2.70 cm−1. Therefore, increase enhances amplitude This work provides comprehensive study mechanisms tissues establishes theoretical foundation application technology diagnosis treatment dermatosis, which may improve plans.