Figure 3. PA difference imaging of a tissue phantom using sequential (top row) and interleaved image acquisition (bottom row).

(a,b) Cross sectional difference images of a phantom that was (a) stationary and (b) translated by 1 mm in y during sequential image acquisition. (e,f) Difference images of a (a) stationary and (b) translated phantom obtained using interleaved image acquisition. (c,d,g,h) Profiles of the image intensity along the dashed lines in (a,b,e,f) which correspond to the location of tubes filled with either the fluorophore (Atto680) or CuCl₂ solution.