Login  Register

Re: T2* computation...

Posted by Gonzalo Rojas Costa on Feb 03, 2020; 8:53pm
URL: http://imagej.273.s1.nabble.com/T2-computation-tp5022909p5022912.html

Hi Fred:

For T2* mapping I mean T2 mapping for gradient echo sequence...

Sincerely,


Gonzalo Rojas Costa


El lun., 3 de febrero de 2020 21:06, Fred Damen <[hidden email]> escribió:

> Greetings,
>
> It depends on what exactly what you mean by T2* mapping?
>
> If you are referring to determining the time constant then the same post
> processing plugin will work.  1/T2* = 1/T2 + 1/T2'; A spin echo pulse
> sequence eliminates, i.e, reduces to negligible level, the T2' component
> leaving just the T2 component.  A gradient echo sequence includes the T2'
> component.
>
> If you are referring to creating deltaB0 map, then you need to do a linear
> fit to the phase image, albeit with special handling of the phase wrap.  I
> have a plugin for this. (I have not yet dressed the code up for release
> though)
>
> If you are referring to Susceptibility Weighted Imaging, I do not know of
> a ImageJ plugin, albeit there are other tools out there.
>
> Enjoy,
>
> Fred
>
> On Mon, February 3, 2020 12:44 pm, Gonzalo Rojas Costa wrote:
> > Hi:
> >
> >   Which plugin computes T2* mapping ?.. Because "MRI Analysis Calculator
> > v1.0" only computes T2 mapping...
> >
> >   Sincerely,
> >
> >
> > Gonzalo Rojas Costa
> > Chair LABMAN (OHBM)
> >
> > Laboratory for Advanced Medical Image Processing
> > Department of Radiology
> > Health Innovation Center
> > Clínica las Condes
> > Lo Fontecilla 441, Las Condes, Santiago, Chile.
> > Tel: 56-2-2105170
> > Cel: 56-9-97771785
> > http://www.aribrain.info
> > https://scholar.google.com/citations?user=LO7LZ3oAAAAJ
> > https://www.researchgate.net/profile/Gonzalo_Rojas2
> > http://www.researcherid.com/rid/B-2036-2013
> > https://cl.linkedin.com/in/gonzalorojascosta
> >
> > --
> > ImageJ mailing list: http://imagej.nih.gov/ij/list.html
> >
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

--
ImageJ mailing list: http://imagej.nih.gov/ij/list.html