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DSI Studio Workshop - Shared screen with speaker view
Anupa
01:34
Hi Dr. Frank,After the class, could you please explain the difference between the tensor model and model free (histogram-like) methods?
jfmr
06:40
Is there any problem? I can't hear anything
Zeke Gleichgerrcht
07:02
I think Frank lost connection, because he dropped his host status
jfmr
07:12
Ok thanks
Smitha Mahesh Kushra
07:17
Not hearing
jfmr
08:01
Yes
Hengenius, James B
08:02
Yep
Anupa
08:03
yes
Anupa
10:59
Thank you very much
Smitha
18:07
Can we do topup for a group of SRC files simultaneously. Similarly can we do reconstruction of all src files simultaneously.
Yasaman Baghezadeh
18:56
Dose DSI studi have template for macaques too for differential tractogrphy?
jfmr
26:51
Can you analyse only a segment of the corticospinal tract?
jfmr
28:32
Ok
Anupa
32:38
Does the follow-up scan should be from the same subject?
Iyad Ba Gari
34:48
Can we use differential tractography with any other microstructure such as QA, MD... or only with dti_fa?
Ricardo Morais
38:46
If we got 2 pathological groups but no control group, can we do a differential tracto. analysis ?
Mengfei Cai
39:06
it seems thats the differential tractography is very similar to ‘randomize ’ in fsl, how do you comment on the difference between these two?
Anupa
40:47
Refering to your result-- the unfinished tracts should be cleaned or we should keep it for reporting.
Ricardo Morais
40:52
Thanks
Yasaman Baghezadeh
41:37
If I am not mistaken this is comparison of two FA. How can we compare two groups with each other? I mean comparison of 10 control with 10 paitient?
Anupa
42:08
Gotcha! Thanks.
Zeke Gleichgerrcht
42:31
So with these results, what is the best way to know which tracts these are (when not obvious like the big bundles)?
Zeke Gleichgerrcht
47:28
for many subjects at once with GUI, could you do it by creating a connectometry DB for time 1 and a different one for time 2 and going through these steps?
Iyad Ba Gari
47:36
Can we use clusters and recognize tracts for results?
Zeke Gleichgerrcht
48:47
but then you would have a different tractography result for each pair? would you average those across pairs?
Zeke Gleichgerrcht
56:09
silly question but how can you determine the direction of the difference from the results? e.g. if some connections are stronger but others are weaker in one group vs. another (or one time vs. another)
Anupa
56:22
In the threshold type- I see 2 types of equations, m1-m2/m1 and m1-m2. Could you please tell me the difference?
Anupa
57:14
okay, thanks
Anupa
59:48
Sham scan- Trying to understand-if we acquire two dti scans, can one be baseline and other one sham? Is that right?
Anupa
01:01:40
okay, thanks.
jfmr
01:02:42
Thank you!
Daniel Lo
01:02:54
Thanks!
Anupa
01:02:55
Thank you very much.
Priyanka Jacob
01:03:01
Thankyou !
Iyad Ba Gari
01:04:58
I tried to download Tiny FSL for centOS 7, but I couldn’t find it.
Smitha
01:05:36
Can you show how can we do the reconstruction of a group of subjects src file
Iyad Ba Gari
01:06:13
Thank you so much
Ricardo Morais
01:06:20
is there a "normal” database DTI group that is validate is public available ?
Jing Xu
01:07:35
I have a question about correction: do we need to collect a different set of data using reversed phase encoding for it? Is this recommended for all the scans?
Smitha
01:07:46
Is GQI is the reconstruction method in Reconstruction step
Ricardo Morais
01:08:15
That's helpful thkx
Smitha
01:08:34
Thank You
Linda Robayo
01:15:16
Is there a minimum sample size (patients) or recommended sample size required for using differential tractography in a cross-sectional study?
Smitha
01:16:11
I have Autistic subjects those who receive intervention and those who doesnot receive intervention. So their are two time points. Can I do differential tractography
Jing Xu
01:16:19
Thank you!
Ricardo Morais
01:17:49
when we have a poor acquisition database (big slice thickness, low directions, anisotropic etc) is there an analysis should we avoid ? (for eg.: better do a correlation then a differential analysis). Is there a metric that is more robust and should be preferred?
Smitha Mahesh Kushra
01:21:05
Thanks
Ricardo Morais
01:21:30
thanks
Linda Robayo
01:22:00
Thanks Frank, have a great weekend!
Mengfei Cai
01:22:16
many thanks !