http://www.k-wave.org/forum/topic/transducer-brightness-in-inverse-scattering-reconstruction Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 00:22:31 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/transducer-brightness-in-inverse-scattering-reconstruction#post-8290 Wed, 11 Aug 2021 15:39:41 +0000 scottzig 8290@http://www.k-wave.org/forum/ <p>Hey Ben,</p> <p>I can indeed, and that is what I'm currently doing. This seems to work fine and isn't an issue for what I'm trying to image. Mostly, I'm just curious as to the reason for the transducer brightness. </p> <p>Thanks for the response,<br /> Scott </p> http://www.k-wave.org/forum/topic/transducer-brightness-in-inverse-scattering-reconstruction#post-8288 Tue, 10 Aug 2021 12:55:06 +0000 bencox 8288@http://www.k-wave.org/forum/ <p>Hi scottzig, </p> <p>Is it meaningful to invert for the sound speed at the source /detector points? Can you just leave the transducer positions out of the inversion? ie. invert for the sound speed elsewhere but not at those points?</p> <p>Best wishes<br /> Ben </p> http://www.k-wave.org/forum/topic/transducer-brightness-in-inverse-scattering-reconstruction#post-8281 Fri, 06 Aug 2021 16:07:05 +0000 scottzig 8281@http://www.k-wave.org/forum/ <p>Hey there,</p> <p>k-Wave is an excellent software package. Thanks for the effort and dedication not only in making it but also in user support.</p> <p>I'm solving an inverse scattering problem in the time domain using a full waveform inversion approach. I model my K transducers as a ring array but I set the location of the transducers manually in source.p_mask. I run K different simulations to generate synthetic data where at each simulation one of the transducers sends a pulse and all K transducers gather time dependent data.</p> <p>My program to generate data and carry out the full waveform inversion run without errors, but in all of my reconstructions there is a large spike in sound speed at the location of each of the transducers. That is, I see the object I'm trying to image but I also very clearly see the transducers in each reconstruction and they often have a prohibitively large (or prohibitively small) sound speed.</p> <p>I'm curious if anyone else has encountered this, and if so, if they know what is causing it and if there are any ways to correct it. Thanks! </p>