AMR files contain a stack of anatomical slices, which are typically coplanar ("inplane") with corresponding functional data sets (FMR files). The actual data are stored as Bitmap images. Each data point is one byte.
| BYTES | DATA TYPE | DESCRIPTION |
| 2 | unsigned short | NrOfSlices |
| Loop over NrOfSlices: | ||
| 1078 | unsigned short | Intensity and color lookup table (LUT); intensities saved on positions 0-226, color values from 246-256 |
| 1*NrOfRows*NrOfColumns | byte | Image data; default number of rows: 256; default number of columns: 256 |