Show files with neuropsych data
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.
- Perfect data, no discernable artifacts, homogeneous signal intensity across field of view and clear contrast between tissue types.
- 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.
- 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.
- 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.
- Excellent data, no discernable motion. Intensity modulation may be present in a SOME slices.
- 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.
- 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.
- 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.
- Perfect data, no discernable motion or slice drop out.
- 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.
- 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.
- 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.
