IXI

See FIRST notes on segmentation: https://docs.google.com/spreadsheets/d/1B7eN9p0R3UfOGkn2VHIzXQaJsivxyJlmh0Camb8bzag/edit?usp=sharing.

Citing

Cite the IXI website.

DTI

There are 17 compressed nifti images. These consist of a b0 and 15 DWI images, and an average of the DWI. This was determined by Paul 2016-08-03. (The earlier DTI was messed up - the second DTI was set to be a b0. so everything was wrong wrt bvals, bvecs.)

Quality Checking

DTI Problems

555: the first 8 scans are larger than the remainder (57 slices, then one scan 56 slices, then the remainder 55 slices).

386 IXI subjects include DTI scans.

Registration issues (from FA, 2016-07-07): 11237, 11419, 11498, 11550, 11550

Fixed 2016-07-10 with rigid-body tweak: 11094, 11279, 11312, 11324, 11353, 11376, 11377, 11380, 11399, 11403, 11453, 11480, 11505, 11562, 11614

Slightly cut off: 11324,

DTI tensor calculation errors and artifacts

Subject	Error	Note/Example
11411	FA banding
11534	bad FA
IXI11535	bad FA
IXI11593	bad FA
IXI11630	bad FA
IXI11648	bad FA
IXI11651	Bad FA