see my answers below.
Cheers,
Bas
--------------------------------------------------
Dr. S.F.W. Neggers
Division of Brain Research
Rudolf Magnus Institute for Neuroscience
Utrecht University Medical Center
Visiting : Heidelberglaan 100, 3584 CX Utrecht
Room B.01.1.03
Mail : Huispost B.01.206, P.O. Box 85500
3508 GA Utrecht, the Netherlands
Tel : +31 (0)88 7559609
Fax : +31 (0)88 7555443
E-mail : [log in to unmask]
Web : http://www.neuromri.nl/people/bas-neggers
http://www.neuralnavigator.com
<http://www.neuralnavigator.com/>
--------------------------------------------------
________________________________
Van: Shaquanda Jones [mailto:[log in to unmask]]
Verzonden: woensdag 2 juni 2010 16:39
Aan: Neggers, S.F.W.; [log in to unmask]
Onderwerp: Re: [SPM] get_orig_coord5.m
Dear Dr. Neggers and SPM list,
I would like to use this utility to report the corresponding MNI
coordinates from a native space image.
[Neggers, S.F.W.] Thats possible
So in other words, I have a native space image and a normalized
image. All of my data processing has been done in the native space image
but I would like to say that this voxel in the native brain is this MNI
coordinate if it is warped. I have the warping parameters from this
image to a normalized brain.
[Neggers, S.F.W.] Use the INVERSE normalization parameters
(*_seg_inv_sn.mat) to project a [x y z] native space coordinate to its
MNI space counterpart, as get_orig_coord is written to do the opposite
to what you want. Get_orig_coord usually projects from MNI space to
native space (see help text provided) by using the normalization
parameters (from *_seg_sn.mat).
1) Is this possible to obtain the MNI coordinates for a
particular voxel in the native space by using this utility? In essence,
I am trying to determine a coordinate from native space in the
normalized MNI space.
[Neggers, S.F.W.] Yes
2) If this is possible, I am struggling with the syntax so any
template examples would be much appreciated.
[Neggers, S.F.W.] P_mni=get_orig_coord([x y
z],'/home/you/mydata/someT1image_seg_inv_sn.mat'). Fill in your native
space coordinates for x,y,z in mm. Your MNI coordinate will be stored in
P_mni this way. You can do more coordinates like this:
P_mni=get_orig_coord([[x1 y1 z1];[x2 y2
z2]],'/home/you/mydata/someT1image_seg_inv_sn.mat')
Thanks!
Shaqunada
------------------------------------------------------------------------------
De informatie opgenomen in dit bericht kan vertrouwelijk zijn en is
uitsluitend bestemd voor de geadresseerde. Indien u dit bericht onterecht
ontvangt, wordt u verzocht de inhoud niet te gebruiken en de afzender direct
te informeren door het bericht te retourneren. Het Universitair Medisch
Centrum Utrecht is een publiekrechtelijke rechtspersoon in de zin van de W.H.W.
(Wet Hoger Onderwijs en Wetenschappelijk Onderzoek) en staat geregistreerd bij
de Kamer van Koophandel voor Midden-Nederland onder nr. 30244197.
Denk s.v.p aan het milieu voor u deze e-mail afdrukt.
------------------------------------------------------------------------------
This message may contain confidential information and is intended exclusively
for the addressee. If you receive this message unintentionally, please do not
use the contents but notify the sender immediately by return e-mail. University
Medical Center Utrecht is a legal person by public law and is registered at
the Chamber of Commerce for Midden-Nederland under no. 30244197.
Please consider the environment before printing this e-mail.
|