Improved back-projection method for circular-scanning-based photoacoustic tomography with improved tangential resolution

• DOI: 10.1364/ao.56.008983
• Publication Date: 2017-11-03T20:13:24Z
• Authors: Jiaying Xiao; Xiaofei Luo; Kuan Peng; Bo Wang
• Keywords: Distortion (music)

While photoacoustic computed tomography (PACT) is generally built with planar transducers of finite size, most current reconstruction algorithms assume the transducer to be an ideal point, which leads a spinning blur in consequently obtained PACT images due model mismatch. In this work, we put forward improved back-projection method that factors geometry improve tangential resolution for 2D circular-scanning-based tomography. Extensive simulations and experiments were carried out study adaptability stability proposed method. Results show can effectively restore distortion image both simulated experimental data. indicated improvement more obvious larger size. We also demonstrated application other than planar, results reconstructed quality significantly affected by shape position used. This may help guide selection design scanning strategy PACT.