are any of the datasets acquired from a clinically relevant as well as control population, or are all of the data from control (normal healthy) individuals?

cheers,
@rno

Hi Arno,

Yes - as part of the NYU data release there are scans from 25 adults with ADHD. If you scroll about half-way down the data page and you will find NewYork_a_ADHD.tar (n = 25 [19M/4F]; ages: 20-50; TR = 2; # slices = 39; # timepoints = 192). These data included in the publications by Castellanos et al. (2008) and Uddin et al. (2008), which I have attached here.

Best,
Clare

Uddin paper attached

thank you very much!

cheers,
@rno

were the nyu images acquired using PACE? if so, did it also have GRAPPA acceleration?

i have run the adhd and part1 datasets through nipype (nipy.org/nipype) and rapidart artifact detection (within nipype) and found there to be very little motion. there were 14 subjects altogether that have motion exceeding 1mm at the center of at least one of the faces of the brains' bounding boxes for at least one of the volumes.

cheers,
@rno

Hi Arno,

we are not sure what you mean by PACE? In any case there was no GRAPPA acceleration or parallelization. It was a standard EPI sequence on an Allegra 3T head only scanner.

Good that you are looking at the quality of the data! We did not release subjects that had significant motion, but yes there are some subjects that have motions exceeding 1mm.

Best,
Maarten

thank you. pace = "prospective acquisition correction" and is a siemens algorithm for k-space modification to account for inter-tr movement.

cheers,
@rno

Hi Arno,

nope, we don't have PACE then.

Also another note on the motion in the ADHD subjects. Just want to make sure you know they are all adults [which helps in having less motion ;)]

best,
Maarten

interestingly, i found twice as many part1 controls with motion outliers as adhd subjects with motion outliers!

cheers,
@rno

Hi Arno,

is that percent-wise or in absolute numbers? You should look at the percentage, as there are more controls compared to ADHD.

cheers,
Maarten

absolutely!

@

Is it possible to have the slice timing information for this dataset?

Hi Yong Fan,

the slice time information is under Docs/Release_Table. For the NYU datasets the slice acquisition order is: interleaved ascending.

Hope this helps,
Maarten