http://www.k-wave.org/forum/topic/gradients-of-sound-speed-in-photoacoustic-image-reconstruction Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:40:22 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/gradients-of-sound-speed-in-photoacoustic-image-reconstruction#post-8517 Mon, 25 Apr 2022 19:41:22 +0000 bencox 8517@http://www.k-wave.org/forum/ <p>Hi houxc, </p> <p>The adjoint example is k-Wave is to obtain the functional gradient for use in a model-based inversion to recover the initial pressure distribution in photoacoustics. Do you want to do ultrasound tomography? Have a look here:<br /> <a href="https://doi.org/10.1088/1361-6420/ac3b64">High resolution 3D ultrasonic breast imaging by time-domain full waveform inversion</a> where the gradient computations for sound speed are described.</p> <p>Best wishes<br /> Ben </p> http://www.k-wave.org/forum/topic/gradients-of-sound-speed-in-photoacoustic-image-reconstruction#post-8494 Sat, 09 Apr 2022 10:11:21 +0000 houxc 8494@http://www.k-wave.org/forum/ <p>Hello<br /> I have been studying the solution of sound velocity gradient recently. I have studied the adjoint program in K-wave, but I still have no clue about how to solve the sound speed gradient, so I would like to ask you for advice and hope to get your advice. </p>