help > RE: Measurement of entire volume brain and Roi
May 22, 2020  11:05 AM | Chris Rorden
RE: Measurement of entire volume brain and Roi
1. I would use a tool like SPM's segmentation to segment the brain from the other tissue, and segment different tissue types in the brain. This will generate probability maps for each voxel for 0..1 (0%..100%) for gray matter, white matter and CSF. The sum for each volume will reveal the volume of each tissue type. This is better than a binary classification of each voxel as it solves the partial volume problem (e.g. voxels that are partly gray and partly white matter).

2. For a drawing in MRIcron, choose Draw/Descriptive to see the volume of your region. For example

Center of mass XYZ 106.00x126.00x106.00
VOI nvox(cc)=min/mean/max=SD: 33401 33.40 =25.0000 96.8260 120.0000 = 23.1273
suggests your drawing submsumes 33401 voxels or 33.4 cubic centimeters

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TitleAuthorDate
Luca Cuffaro Mar 11, 2020
RE: Measurement of entire volume brain and Roi
Chris Rorden May 22, 2020