Standard MINC Variable Names

1. image - The image variable is of class group. It is the variable which actually contains image data in a MINC file, so it is defined using whatever type and dimensions are required to represent the image. By convention, MINC considers the first spatial dimension of the image variable to be the ``slice'' dimension, and any other spatial dimensions are considered to be ``image'' dimensions. The image variable is the only variable whose presence in a MINC file is mandatory.

2. image-min - The image-min variable is of class var-attribute. If per-slice scaling of the image data is enabled, this variable must contain 64-bit floating-point data which provides the lowest value of the real range for each slice. The dimensionality of either the image-min or the image-max variable corresponds to the first one or two dimensions of the image variable. For example, in an fMRI dataset with a dimension ordering of time, zspace, yspace, xspace, the image-min variable may be a 2D array with dimensions time and zspace. It is acceptable for the image-min to have lower dimensionality. For example, the variable could be a 1D array array along the time dimension, or it may be a scalar to specify a global minimum real value.
3. image-max - The image-max is the counterpart to the image-min variable, except that it contains the maximum value of the real data range for each data slice.
4. study - This variable is of class group. It contains no useful data, but serves only to group those attributes which contain information about the study of which this image is a part. Since the variable contains no data, the type is irrelevant.
5. patient - Like the study variable, this variable is of class group and contains no data. It serves to group the attributes which specify the identification and characteristics of the patient.
6. acquisition - The acquisition variable is of class group. Like the study and patient variables, the acquisition variable never contains useful data, but serves only to group those attributes which contain information about the image acquisition parameters, modality, etc.
7. xspace - Variable of class dimension which groups the attributes specifying the X axis.
8. yspace - Variable of class dimension which groups the attributes specifying the Y axis.
9. zspace - Variable of class dimension which groups the attributes specifying the Z axis.
10. time - Variable of class dimension which groups the attributes specifying the time axis.
11. xfrequency - Variable of class dimension which groups the attributes specifying the spatial frequency axis.
12. yfrequency - Variable of class dimension which groups the attributes specifying the spatial frequency axis.
13. zfrequency - Variable of class dimension which groups the attributes specifying the spatial frequency axis.
14. tfrequency - Variable of class dimension which groups the attributes specifying the temporal frequency axis.
15. xspace-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the X axis.
16. yspace-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the Y axis.
17. zspace-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the Z axis.
18. time-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the time axis.
19. xfrequency-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the spatial frequency axis.
20. yfrequency-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the spatial frequency axis.
21. zfrequency-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the spatial frequency axis.
22. tfrequency-width - Variable of class dimension-width which groups the attributes specifying the width of samples along the temporal frequency axis.