Fig. 5.

Xenon flash-lamp-based PACT of tissue phantoms made of latex cords sandwiched by chicken breast tissue with varied preset thicknesses. (a) Photograph of an exposed phantom with the top chicken breast tissue removed. (b)–(f) PACT images of the phantoms. The surrounding chicken breast tissue had thicknesses of (b) 1.0, (c) 2.0, (d) 3.0, (e) 3.5, and (f) 4.0 cm. (g) Plot of CNR versus the depth of the latex cords, showing both experimental data points and best-fitting exponential decay curve.