k-Wave

1. kenichiro yoshimi
   

   Member
   Joined: Jan '13
   Posts: 1

   Hi Dr. Treeby and Dr. Cox

   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
   http://en.wikipedia.org/wiki/Photoacoustic_imaging_in_biomedicine#Photoacoustic_microscopy_.28PAM.29
   (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.)

   I studied the "Example: 3D Time Reversal For A Planar Sensor", but I don't know if it is applicable.
   Would you advise me on the proper way?

   thanks a lot.

   Posted 11 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Kenichiro,

   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 review paper 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.

   Brad.

   Posted 11 years ago #

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