How to measure volumes in structural brain MRI?

[aalaa12341]

How to measure volumes in structural brain MRI? can you tell me step by step how can i measure brain volume in slicer 4.11 from structural mri

[Fluvio_Lobo]

@aalaa12341,

A quick an easy way to do this is to:

1. Segment the tissue or structure of the brain that you are interested in using the Segment Editor
   

   
   
   Here I created a small segment of part of the ventricular system.
   For MRI, I usually use the threshold tool to create a mask and the brush tool to segment the masked region.

2. Calculate a volume of the tissue or structure by using the Segment Statistics module
   

   
   
   Look are the settings I used on the right, this module is simple, but make sure you are using the volume that corresponds to the segmentation volume, if you have multiple.

Also, I used the MRHead sample dataset available with 3D Slicer for practice!