http://www.k-wave.org/forum/topic/effect-of-number-of-sensor-points Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:41:48 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/effect-of-number-of-sensor-points#post-4380 Fri, 21 Mar 2014 05:50:27 +0000 deblina 4380@http://www.k-wave.org/forum/ <p>Hello Brad,</p> <p>Thanks for the explanation. I got your point.</p> <p>Deblina </p> http://www.k-wave.org/forum/topic/effect-of-number-of-sensor-points#post-4376 Wed, 19 Mar 2014 10:03:27 +0000 Bradley Treeby 4376@http://www.k-wave.org/forum/ <p>Hi Deblina,</p> <p>The magnitude (or amplitude) of the photoacoustic source is proportional to the heat deposited in the tissue and the photoacoustic efficiency (or Gruneisen coefficient). If all of the generated ultrasound energy is not detected, this will result in magnitude errors in the reconstructed image (as well as other artefacts).</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/effect-of-number-of-sensor-points#post-4373 Tue, 18 Mar 2014 06:08:52 +0000 deblina 4373@http://www.k-wave.org/forum/ <p>Hello Brad,</p> <p>Thanks for the information. Could you please explain, how the reconstructed magnitude is related to image artifacts or reconstructed image size? </p> http://www.k-wave.org/forum/topic/effect-of-number-of-sensor-points#post-4366 Fri, 14 Mar 2014 12:53:48 +0000 Bradley Treeby 4366@http://www.k-wave.org/forum/ <p>Hi Deblina,</p> <p>Without knowing more about your simulation, it's difficult to comment. In the <a href="http://www.k-wave.org/documentation/example_pr_3D_tr_spherical_sensor.php">3D Time Reversal Reconstruction For A Spherical Sensor Example</a>, the reconstructed shapes are approximately the same. However, using a larger number of sensor points improves the accuracy of the reconstructed magnitude, and reduces the image artefacts.</p> <p>Brad </p> http://www.k-wave.org/forum/topic/effect-of-number-of-sensor-points#post-4360 Wed, 05 Mar 2014 13:53:45 +0000 deblina 4360@http://www.k-wave.org/forum/ <p>Hi,<br /> I have a query regarding number of sensor points.From '2D Time Reversal Reconstruction For A Circular Sensor Example' I have observed that if the number of sensor points are increased, the blurriness of the reconstructed image get reduced i.e. it improves the quality of the reconstructed image. But when I tried with the 3D program,I could not find much of change in shape of the reconstructed image. </p> <p>Is there any specific reason that the 3D program did not provide remarkable change in reconstructed image?</p> <p>Thanks,<br /> Deblina </p>