k-Wave

1. chahne
   

   Member
   Joined: May '20
   Posts: 3

   Dear all,

   I am considering to use k-Wave for simulation of a single transducer element (no phased-array) to model the ultrasound emission, power law, reflection at a target and acquisition of the reflected signal by the same transducer. I read through the manual, looked at the documentation and studied the example scripts, but I am still having a hard time setting up my relatively simple simulation.

   Is it possible to reproduce the above-mentioned setup within k-Wave? What would be a suitable starting point for reading or coding?

   Any help is appreciated.

   Many thanks
   Chris

   Posted 4 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Chris,

   There is no specific example for this. However, you could take something like the Snell's Law And Critical Angle Reflection Example, set source.p to be a single time series (so the source mask acts as a single transducer), assign source.p_mask to sensor.mask (so you use the same transducer to send and receive), and then update the medium definition as needed.

   Brad.

   Posted 4 years ago #

3. chahne
   

   Member
   Joined: May '20
   Posts: 3

   Hi Brad,

   Thanks for your help on this. I followed your advice and started with the 'example_tvsp_snells_law.m'. There, I managed to reduce the number of transducers to a single one with 'elements=1;' and connected a sensor via 'sensor.mask = source.p_mask;'.
   I further added the new 'sensor' variable to the command 'kspaceFirstOrder2D(kgrid, medium, source, sensor, input_args{:});'. Running this setup, I only find a single peak in sensor.mask, but nothing else. I would expect an oscillating signal or at least a pressure amplitude of certain length. Can you please guide me to the point where I can find such sensor data?

   I look forward to your reply.

   Many thanks
   Chris

   Posted 4 years ago #

4. chahne
   

   Member
   Joined: May '20
   Posts: 3

   Hi again,

   I just figured out that the function 'kspaceFirstOrder2D(args)' returns 'sensor_data' which yields an oscillating amplitude when plotted. For now, that's pretty much what I was looking for. Thanks a ton!

   Best
   Chris

   Posted 4 years ago #

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