Dear Marise and Laura,

As Bruce et al frequently warned users about, you should never mix different versions.
The effects have been quantified recently by our group, see

http://dx.plos.org/10.1371/journal.pone.0038234

I can add to this that the differences between v5.1.0 and v5.0.0 are somewhat
smaller than between v5.0.0 and v4.3.1/v4.5.0.

Cheers,
Ed

On 3 Jul 2012, at 18:00, freesurfer-request@nmr.mgh.harvard.edu wrote:

Message: 10

Date: Tue, 3 Jul 2012 14:32:10 +0000

From: "L. Koenders" <l.koenders@amc.uva.nl>

Subject: [Freesurfer] different fs versions

To: "'freesurfer@nmr.mgh.harvard.edu'"

        <freesurfer@nmr.mgh.harvard.edu>

Message-ID:

        <D03CA44173AD494B8309658B6E1DEFFFEA8609@MS-APP-804D.amc.intra>

Content-Type: text/plain; charset="us-ascii"


Dear Freesurfer people,


We attended the Freesurfer course in Amsterdam last week, thank you so much for the information! During the course it was mentioned that it is a very bad idea to mix Freesurfer versions during the analysis. However, we did all the preprocessing on an external server, using version 5.0.0 ('freesurfer-Linux-centos4_x86_64-stable-pub-v5.0.0') and we are currently doing all of our group-analysis on a different server, which has version 5.1.0 on it (' freesurfer-Linux-centos4_x86_64-stable-pub-v5.1.0').


Because both servers are used by a lot of people, it will become difficult to do an update on either one of these versions. Will this become a problem, or is there a way to avoid problems while still using these different versions?


Thanks in advance for your help!


Kind regards,


Marise Machielsen, MD.

Laura Koenders, MSc.


Laura Koenders

PhD-student

AMC, Academic Psychiatric Centre

Department Early Psychosis

Room: PA3-138

Meibergdreef 5

1105 AZ Amsterdam

+31 (0) 20 8913 609

+31 (0) 614 285 301

www.group-project.nl

www.amcpsychiatrie-psychose.nl

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 Academisch Medisch Centrum 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 Amsterdam onder nr. 34362777. De Algemene Inkoop Voorwaarden van het AMC zijn van toepassing op en maken integraal onderdeel uit van alle rechtsbetrekkingen, daaronder mede verstaan alle inkoop opdrachten en overeenkomsten, tussen AMC en derden. Deze voorwaarden zijn te raadplegen op www.amc.nl en worden op verzoek toegezonden.


________________________________


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. Academic Medical Center is a legal person by public law and is registered at the Chamber of Commerce for Amsterdam under no. 34362777. The AMC General Purchase Terms constitute an integral part of all legal relations, including but not limited to all purchase orders and contracts, between the AMC and third parties. These terms can be downloaded at the website www.amc.nl and will be sent to you at your request.