Current 3D-nPAT prototype with 16-element arc array. (a) Experimental setup consists of (i) power supply, (ii) laser head, (iii) diffuser, (iv) fiber bundle holder, (v) top plate of mounting structure, (vi) small frame for motor, (vii) display, (viii) DAQ, (ix) trigger card, (x) chiller, and (xi) 3D printed hemisphere cap with transducer-amplifier unit and optical fibers in arc, (b) four-legged imaging phantom, (c) imaging protocol and the location of imaging target, (d) 2D project of 3D PA image of the imaging target (in water), (e) 2D project of 3D PA image of the imaging target (in 2% milk and 0.02% ink media, which represents the optical properties of the brain tissue).

This manuscript is submitted and pending publication (Available upon request).

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