title: Full field detection in photoacoustic tomography.
abstract: Imaging the full acoustic field around an object by use of an optical phase contrast method is used to accelerate the data acquisition in photoacoustic tomography. Images obtained with a CCD-camera at a certain time show a projection of the instantaneous pressure field in a given direction. In this work a reconstruction method is presented to obtain the two-dimensional initial pressure distribution by back propagating the observed wave pattern in Radon space. Numerical simulations are used to prove the accuracy of the reconstruction algorithm and to demonstrate a method for correcting limited data artifacts. Finally, the overall performance is shown with experimentally obtained data.
authors.affiliation: Department of Physics, Karl-Franzens-University, 8010 Graz, AUSTRIA. ro.nuster@uni-graz.at
authors.forename: Robert
authors.initials: R
authors.lastname: Nuster
authors.forename: Gerhard
authors.initials: G
authors.lastname: Zangerl
authors.forename: Markus
authors.initials: M
authors.lastname: Haltmeier
authors.forename: Günther
authors.initials: G
authors.lastname: Paltauf
mesh_terms: D000465:Algorithms; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D033401:Microscopy, Acoustic / Q000379:methods*; D014054:Tomography / Q000379:methods*