BrainVISA

OK, could you send your structural scan and one functional volume using a service like yousendit.com or anything equivalent ? You halready have my email adress don't you ?

Olivier

Hello, so you filled the resolutionX/Y/Z fields with those values ? So it's not homogenious along all directions. Could this be a problem? On principle no, that should not matter. It is just taken to define the kernels so their resolution fits with the functional images. Do you still have the same e...

Hi, it is difficult to know what happened from the information you provided but here is my guess : when you create kernels for a specific anatomy, you also have to provide the resolution of the functional volumes you will project at the next step. It is possible that you got that wrong and that for ...

Hello Isabelle and Denis, I downloaded and installed the pack available on the BV web site, and I cannot reproduce this problem. I created a new database, copied elements (one protocole) of another database, tried the parameterization pipeline and all fields were properly filled. So Isabelle I don't...

Hi Guillaume, I am abroad with my family until early May, so I cannot do anything about it until then. I 'd be surprised if the problem came from the index of the faces, though... I will have a look at that.
In the meantime, you can easily write a .mesh file from SPM, I guess.

Olivier

Thank you both for the answer, I will have a look at all this.

Olivier

Well, it depends what you call correct. See the snapshot attached, sometimes they are so oversegmented that I would not call it 'correct', other times they are. For instance the F.I.P. is not very good. The Superior Frontal sulcus has many pieces but it looks OK. On the other side, the cingular sulc...

Hello Sylvain,
just a partial answer : if Catia can export a format that is readable by Blender (free software), then we have python plugins to convert from blender to our mesh format. There might be a simpler solution, though.

Olivier

Hello,
I have a dataset which provides a very nice segmentation of tissues and nice meshes, but sulci are really oversegmented (many pieces), any idea what can cause that ?

Olivier

Hello, the process that provides the cortical surface parameterization is on user level 2 (expert) in Brainvisa, which means that it is not really supported. Not many people use it yet and it is still in development. Nevertheless : 1. could I apply the final Parcellation result on gyri mesh ? it loo...

Good to hear ! I did not know there was already a gitfti class in spm...
Although there is no design limitation for multiple meshes, it is not recommended and has not been implemented yet.

Olivier

Hello, I am trying process images that have a unsual orientation, the z axis being inverted compared to the usual orientation. I thought that chosing "allow_flip_initial_MRI=TRUE" in the t1 pipeline would restore a proper usual orientation, but : - I get a message : "Unusual orientati...

Thank you Jeff,
but how do you access those, I don't see them in the graph browser.

Hello, when I look at the attributes of a sulcus in a browser, I see only three sets of buckets : bottom, ss, and other. There is no set for the buckets at the junction with the brain hull. But nevertheless, it is possible to create an image of those buckets with the 'Create Sulcus Label Volume'. So...

in Anatomist, right click on the graph in the main window and in the cointextual menu there is a save option.