http://www.k-wave.org/forum/topic/t0-b_mode-example Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 15:41:27 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/t0-b_mode-example#post-6732 Tue, 29 Jan 2019 22:28:52 +0000 Bradley Treeby 6732@http://www.k-wave.org/forum/ <p>Hi Sjoerd,</p> <p>Well spotted - thanks for posting. I've just updated the code ready for the next release.</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/t0-b_mode-example#post-6708 Mon, 14 Jan 2019 16:14:06 +0000 sjoerdn 6708@http://www.k-wave.org/forum/ <p>Hi,</p> <p>There is a minor mistake in 'example_us_bmode_linear_transducer.m', that caused the b-mode image to be displayed incorrectly. The time array is shifted by t0 (half a pulse length), implemented as:</p> <p> t0 = length(input_signal) * kgrid.dt / 2;<br /> r = c0 * ( (1:length(kgrid.t_array)) * kgrid.dt/ 2 - t0); % [m]</p> <p>However, this should be (t0 included within brackets):</p> <p> t0 = length(input_signal) * kgrid.dt / 2;<br /> r = c0 * ( (1:length(kgrid.t_array)) * kgrid.dt - t0)/ 2 ; % [m]</p> <p>Kind regards,<br /> Sjoerd </p>