3D photoacoustic tomography History of engineering & technology Landweber algorithm Photoacoustic Computed Tomography (PACT) U-net absorption convolutional neural network correlation matrix filter deconvolution deep learning diffused-beam illumination empirical mode decomposition fast imaging final time inversion full-field detection full-ring illumination full-view illumination and ultrasound detection image formation theory image quality assessment image reconstruction techniques iterative reconstruction low cost motion artifacts optoacoustic imaging photo-acoustic tomography photoacoustic coplanar photoacoustic imaging photoacoustic tomography photoacoustic tomography (PAT) photoacoustics