http://www.k-wave.org/forum/topic/example-to-reconstruct-image-from-pat Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 01:09:10 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/example-to-reconstruct-image-from-pat#post-1313 Thu, 28 Feb 2013 10:55:15 +0000 Bradley Treeby 1313@http://www.k-wave.org/forum/ <p>Hi Kenichiro,</p> <p>In photoacoustic microscopy (PAM), a focused ultrasound detector is used to record the photoacoustic signals at particular spatial positions on the tissue surface (in OR-PAM the excitation laser light is also focused). The signal recorded at each spatial position is analogous to an ultrasound scan-line, where the beam-forming in the PAM case is performed directly by the use of a focused transducer. This means that no image reconstruction is required. Instead, the individual time-series recorded at each position directly become the columns of the photoacoustic image. The <a href="http://www.medphys.ucl.ac.uk/research/mle/pdf_files/Review_Roy_Soc_Interface_1.pdf">review paper</a> by Paul Beard (or equally any of the review papers by Lihong Wang) gives a good explanation of the differences between photoacoustic microscopy and tomography.</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/example-to-reconstruct-image-from-pat#post-1312 Thu, 28 Feb 2013 08:29:29 +0000 kenichiro yoshimi 1312@http://www.k-wave.org/forum/ <p>Hi Dr. Treeby and Dr. Cox</p> <p>I am new to k-Wave. I am trying to use k-Wave to reconstruct an image from acoustic signals obtained by scanning with photoacoustic microscopy (PAT) such as<br /> <a href="http://en.wikipedia.org/wiki/Photoacoustic_imaging_in_biomedicine#Photoacoustic_microscopy_.28PAM.29" rel="nofollow">http://en.wikipedia.org/wiki/Photoacoustic_imaging_in_biomedicine#Photoacoustic_microscopy_.28PAM.29</a><br /> (The purpose of this scanning is to see the vasculatures in rat skin. The imaging head was directly placed on the surface of the skin with ultrasound gel asnd scanned over the ROI (5x4 mm^2) with a step size of 50 micro meter.)</p> <p>I studied the "Example: 3D Time Reversal For A Planar Sensor", but I don't know if it is applicable.<br /> Would you advise me on the proper way?</p> <p>thanks a lot. </p>