perform conversion between different file types and optionally extract a subset of the input image.
If used correctly, this program can be a very useful workhorse. In addition to converting images between different formats, it can be used to extract specific studies from a data set, extract a specific region of interest, flip the images, or to scale the intensity of the images.
| -coord axis coord | extract data only at the coordinates specified. 
| axis | the axis of interest |  | coord | the coordinates of interest |  | 
| -vox sizes | change the voxel dimensions. 
| sizes | A comma-separated list of values. Only those values specified will be changed. For example: 1,,3.5 will change the voxel size along the x & z axes, and leave the y-axis voxel size unchanged. |  | 
| -datatype spec | specify output image data type. 
| spec | the data type specifier. |  | 
| -scale factor | apply scaling to the intensity values. 
| factor | the factor by which to multiply the intensities. |  | 
| -offset bias | apply offset to the intensity values. 
| bias | the value of the offset. |  | 
| -zero | replace all NaN values with zero. | 
| -output type | specify type of output | 
| -layout spec | specify the layout of the data in memory. The actual layout produced will depend on whether the output image format can support it. 
| spec | the data layout specifier. |  | 
| -prs | assume that the DW gradients are specified in the PRS frame (Siemens DICOM only). | 
| -info | display information messages. | 
| -quiet | do not display information messages or progress status. | 
| -debug | display debugging messages. | 
| -help | display this information page and exit. | 
| -version | display version information and exit. |