User talk:GavinMorley

pulse sequence animation

Hello Gavin,

would you mind sharing the PovRay code of your pulse sequence animation that I saw on the Hahn Echo site? It would be great since I could adapt it for my research work - with reference to you of course...

Schiefesfragezeichen (talk)

• Sure, I do plan to put the code up on Wikipedia after I tidy it up and put in some comments. --GavinMorley (talk) 13:06, 4 May 2011 (UTC)

Hi Gavin, I'm teaching a medical imaging course and I think your animation is a great illustration of the mechanics of the pulse-echo sequence. I was thinking, though, that for beginning readers it might be easier to understand what's going on with the spins during the echo (as they rephase and then dephase again) if each arrow were a different color. Did you ever end up posting your povray code? — Control.valve (talk) 17:13, 18 January 2014 (UTC)

• I put up the POV-Ray code here: https://github.com/GavinMorleyLab/POV-Ray It is CC-by-SA so feel free to make one with different colours for the spins GavinMorley (talk) 17:04, 14 January 2017 (UTC)

Quality Image Promotion

Your image has been reviewed and promoted Congratulations! HahnEcho GWM.gif, which was produced by you, was reviewed and has now been promoted to Quality Image status. If you would like to nominate another image, please do so at Quality images candidates. We also invite you to take part in the categorization of recently promoted quality images. Comments {{{3}}}

Quality Image Promotion

Your image has been reviewed and promoted Congratulations! GWM HahnEchoDecay.gif, which was produced by you, was reviewed and has now been promoted to Quality Image status. If you would like to nominate another image, please do so at Quality images candidates. We also invite you to take part in the categorization of recently promoted quality images. Comments Good quality. --Saffron Blaze 14:08, 30 May 2011 (UTC)

Nonconstant pulse-train time-axis

File:GWM HahnEchoDecay.gif is a great illustration of the relaxation modes. However, the pulse-train at the bottom begins to stretch when the time reaches the "echo" stage. Should the green axis remain fixed, and the red dot progress through and then beyond the echo hump? DMacks (talk) 12:54, 29 July 2012 (UTC)

Yes, the animation you suggest is this one: http://en.wikipedia.org/wiki/File:HahnEcho_GWM.gif and should be shown first as you say. Then the later one is useful to understand Spin echo decay. GavinMorley (talk) 13:15, 22 August 2012 (UTC)

MOTD Notification

⭐ A file you uploaded is on the main page! ⭐ File:GWM HahnEchoDecay.gif, that you uploaded, is on the main page today. Thank you for your contributions to this project.

//EatchaBot (talk) 00:01, 28 June 2020 (UTC)