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help > RE: QA_MaxMotion: what are the units?
May 13, 2022 09:05 AM | Alfonso Nieto-Castanon - Boston University
RE: QA_MaxMotion: what are the units?
Hi David,
Right, exactly, the QA_MaxMotion variable represents the maximum motion (in mm units) between two consecutive scans/acquisitions for each subject (i.e. the maximum framewise displacement across all timepoints). This represents the framewise displacement observed before any outlier identification/removal (in contrast, the QA_MeanMotion variable contains the average framewise displacement after disregarding any identified outlier scans/acquisitions)
Best
Alfonso
Originally posted by David Fischer:
Right, exactly, the QA_MaxMotion variable represents the maximum motion (in mm units) between two consecutive scans/acquisitions for each subject (i.e. the maximum framewise displacement across all timepoints). This represents the framewise displacement observed before any outlier identification/removal (in contrast, the QA_MeanMotion variable contains the average framewise displacement after disregarding any identified outlier scans/acquisitions)
Best
Alfonso
Originally posted by David Fischer:
Hi!
I'm looking at the plot of "QA_MaxMotion" that's generated for all subjects, and the numbers range from 0 to 15. What are the units of this measurement? Does it represent the maximum distance moved during the scan?
Thank you!
I'm looking at the plot of "QA_MaxMotion" that's generated for all subjects, and the numbers range from 0 to 15. What are the units of this measurement? Does it represent the maximum distance moved during the scan?
Thank you!
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| Title | Author | Date |
|---|---|---|
| David Fischer | May 11, 2022 | |
| Alfonso Nieto-Castanon | May 13, 2022 | |