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ENH: Plot histogram of T2* values in gray-matter mask #2778

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merged 9 commits into from
May 17, 2022

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effigies
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Closes #2541. I think we should also show the gray-matter mask in the T2*-boldref map immediately above the histogram.

Documentation that should be reviewed

Working on the OHBM poster should provide some images/text that can be added to the docs.

Keep separate from init_bold_t2s_wf to avoid possible ordering concerns,
for example, if the T2* map is ever needed to calculate the BOLD-T1w
transform needed to resample the gray matter mask back into BOLD space.
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Example histogram from CI (so registration is intentionally sloppy for speed). Probably makes sense to clip at 0-100ms. Are 2ms bins acceptable, or should we aim for 1ms or even smaller? We could probably clip at 0-80ms and do 0.5ms bins without making the bars annoyingly thin.

sub-02_task-cuedSGT_run-01_desc-t2starhist_bold

Now that we've got somewhere to start, I'll be running on original data with normal settings this evening to verify that we see reasonable values.

cc @javiergcas

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I do have WM and CSF masks as well, if it would be helpful, rather than cluttering to plot these histograms together. See https://seaborn.pydata.org/generated/seaborn.histplot.html for options for dealing with multiple histograms.

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t2star_reports

@effigies effigies merged commit 3ce5ec9 into nipreps:master May 17, 2022
@effigies effigies deleted the enh/t2s_histograms branch May 17, 2022 18:24
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Fixes can come in future PRs.

@effigies effigies added this to the 22.0.0 milestone May 17, 2022
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Multi-echo reporting: histogram of T2* values in gray-matter mask
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