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DSI Studio Workshop - Shared screen with speaker view
Yasaman Baghezadeh
12:14
Each time I perform the quality control I get a different results.
Zeke Gleichgerrcht
16:40
How does DSI decide to call it "low quality outlier" then? It's not based on that R value then right?
Zeke Gleichgerrcht
17:19
Ah okj, it's an outlier relative to the others in this sample, not a universal threshold. Thank you!
Zeke Gleichgerrcht
18:46
But if the original cohort has 4 outliers, do you recommend processing the WHOLE sample with eddy correction? or just the bad ones?
Priyanka Jacob
19:04
So in this case is the problematic src file - SCA206_ses02 (because of DWI count 12 instead of 16)? or all those with low quality outlier?
Yasaman Baghezadeh
23:05
which one is better for animal study?
jfmr
23:11
Maybe you’ve already mentioned it but, can DSI do HARDI tractography?
Anupa
29:34
To use QA as the metric of our interest, does it have to be multi-shell data always? Is QA unsuitable for single shell data?
Mengfei Cai
33:55
in T2a, do we always use the default red mask for white matter?
Linda Robayo
35:37
what is the benefit of reconstructing in the template space?
Mengfei Cai
36:19
actually, does this mean: as long as the red mask covers the WM area, it will be oK? or we can use a precise WM mask segmented from SPM12
Zeke Gleichgerrcht
36:42
What is the number it makes us define for QSDR in millimeters?
Mengfei Cai
41:15
do you recommend to strip the skull before preprocessing of DWI raw data?
Ricardo Morais
43:50
if poor acquisition dataset (slices 3mm or low directions for eg) we should prefere GQI due to be more resilient to noise ?
Zeke Gleichgerrcht
55:07
can the microscopic be computed from DTI?
Anupa
01:05:44
Thank you.
Priyanka Jacob
01:05:47
Thank you!
Daniel Lo
01:05:48
Thanks!
Chang-Le Charles Chen
01:05:48
Thank you!
jfmr
01:05:50
Thank you
Jing Xu
01:05:53
Thank you, Frank!
Ricardo Morais
01:05:55
if we don't have a control group what type of analysis should we use ? connectometry analysis also?
Wu, Minjie
01:06:00
Thank you!
Liming
01:06:11
THank you!
Ricardo Morais
01:06:42
connectometry and then correlation tracto..ok Thanks!
Vida Rebello
01:06:58
Thank you!
jfmr
01:07:08
I've got a question that applies particularly to my research. If you want to study a small region such as the subthalamic nucleus, what kind of adquisition would you use?
jfmr
01:07:17
sorry for the typos
jfmr
01:08:36
Ok thanks!
Linda Robayo
01:08:42
if we want the fa values of the cingulum should we used an atlas to select that ROI and then statistics or should we run fiber tracking and then get the tracts - statistics, or both will give the same result?
Linda Robayo
01:10:53
thank you!
Admin
01:11:47
It may be out of topic for today, but just for the purpose of planning, can you comment on how many hours of MRI scanning are needed to get good tracktography results for live animals, such as mice. I see DWI take really long time when many directions are added, and EPI method often generate distortions.
Ricardo Morais
01:16:49
also got a question that is related to my research: to compare 3 pathological groups (AD, DCI and bvFTD) with their neuropschycological tests results…what is your advice, should I do a connectrometry analysis ?
Ricardo Morais
01:26:45
yes u did , thanks!
Mengfei Cai
01:27:11
many thanks
Ricardo Morais
01:27:36
See you all next workshop
Ricardo Morais
01:27:37
tkx