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Memory: Anatomical Data

VMRs in general

For each voxel of a VMR an unsigned char (1 byte) is stored. If a corresponding V16 (16-bit precision) file is loaded as well, a total of 3 bytes per voxel is occupied by the data.

1mm VMRs

In their native voxel matrix size (256 x 256 x 256), each VMR uses approx. 16MB of RAM.

0.5mm VMRs

Doubling the resolution in each spatial dimension requires 8 times the memory, i.e. 128MB for a fullsize matrix. BrainVoyager QX gives you the opportunity to remove all non-head portions of the image, so to usually save roughly 70 per cent of the space leading to roughly 35MB to 40MB

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