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Motion Rating Scale – Anatomic Data

Applies to T1, T2, and T1 Estimation images*

Instructions: Each dataset should be rated using the 0-3 scale below. If it contains one or more jump(s) as defined below, add 0.5 to the rating.

  1. Perfect data, no discernable artifacts, homogeneous signal intensity across field of view and clear contrast between tissue types.
  2. Good image quality and contrast. Some artifacts where all slices contain a variation in intensity including variation in homogeneity or discrete artifacts such as zippers, ringing, wrap-around, etc.
  3. Serious artifacts caused by motion, B0 or B1 non-uniformity. All slices contain a severe intensity variation across FOV. Poor contrast between tissue types but discernable tissue boundaries.
  4. Excessive image artifacts due to motion or other factors affecting all slices. No visible tissue contrast or discernable tissue boundaries. Data should clearly be discarded.

*Note that for the T1 estimation images as the TI approaches the T1 values of GM and WM (800-1500 msec) the image intensity will drop sharply. This not an artifact and images should be rated consistently with the other T1 estimation images unless severe motion is detected.

*These criteria are based on the image quality alone and make no reference for the intended use for normalization or VBM segmentation, which may be subjective criteria.

Motion Rating Scale – Functional Data

Applies to ASL/BOLD, Alpha, Resting State BOLD, Baseline CBF

Instructions: Each dataset should be rated using the 0-3 scale below.

  1. Excellent data, no discernable motion. Intensity modulation may be present in a SOME slices.
  2. Some minimal motion where ALL slices contain a change in intensity and/or position. Degree of motion does not pose a threat to the integrity of the data.
  3. Continuous, moderate motion where all slices contain a change in intensity and position. Degree of motion may pose a threat to the integrity of the data.
  4. Continuous, excessive motion where all slices contain a change in intensity and position; data should clearly be discarded.

Motion Rating Scale – DTI/HARDI Data

Applies to DTI and HARDI images

Instructions: Each dataset should be rated using the 0-3 scale below. DTI data is rated by viewing a movie loop of the sequential b=0 images that are spaced at regular intervals in the the DTI data set. With 68 direction DTI and HARDI data, the b=0 images occur at intervals of 11 images.

  1. Perfect data, no discernable motion or slice drop out.
  2. Some minimal motion where some slices contain a change in intensity and/or position.* Degree of motion does not pose a threat to the integrity of the data.
  3. Continuous, moderate motion where all slices contain a change in intensity and position. This might result in many or all slices dropping out entirely for an interval. Degree of motion poses a threat to the integrity of the study’s data.
  4. Continuous, excessive motion where all slices contain a change in intensity and position; data should clearly be discarded.

* In DTI data transient head motion causes individual slice dropout.