volume calculation
volume calculation
Hello !
Is there a command to calculate the volume of a ROI or the volume of a mesh please ?
Best regards,
Marine
Is there a command to calculate the volume of a ROI or the volume of a mesh please ?
Best regards,
Marine
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Re: volume calculation
Hi marine,
The command AimsVoiStat seems to do that. You give as parameters a volume and a roi graph and it computes statistics about the ROIs, including volume.
Example : AimsVoiStat -i image.ima -v graph.arg -o stats.txt
Dominique
The command AimsVoiStat seems to do that. You give as parameters a volume and a roi graph and it computes statistics about the ROIs, including volume.
Example : AimsVoiStat -i image.ima -v graph.arg -o stats.txt
Dominique
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Re: volume calculation
Hi,
For a mesh, the volume inside a closed mesh can be calculated by AimsMeshArea.
Denis
For a mesh, the volume inside a closed mesh can be calculated by AimsMeshArea.
Denis
Re: volume calculation
Ok for the calculation of a mesh volume.
For a ROI volume, how can I create the corresponding .arg file of a binary volume (2D . nii file) please ?
Marine
For a ROI volume, how can I create the corresponding .arg file of a binary volume (2D . nii file) please ?
Marine
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Re: volume calculation
For a binary volume you can also use AimsMassCenter, which computes the volume, mass and mass center in a volume.
Otherwise converting a binary volume to a ROI graph is done using AimsGraphConvert:
Denis
Otherwise converting a binary volume to a ROI graph is done using AimsGraphConvert:
Code: Select all
AimsGraphConvert binvolume.nii outroi.arg
Re: volume calculation
Well !
Thank you very much !
Marine
Thank you very much !
Marine
Re: volume calculation
Hi,
Thanks for the AimsVoiStat command explanation.
Its output is like this:
RoiName| StTime| DuTime| Volume| Mean| StdDev| Min| Max
I tried this on a single arg drawn on a T1 image; therefore I don't understand how it outputs a Mean, StdDev, Min and Max ? What are StTime and DuTime for ???
thanks,
Josselin
Thanks for the AimsVoiStat command explanation.
Its output is like this:
RoiName| StTime| DuTime| Volume| Mean| StdDev| Min| Max
I tried this on a single arg drawn on a T1 image; therefore I don't understand how it outputs a Mean, StdDev, Min and Max ? What are StTime and DuTime for ???
thanks,
Josselin
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Re: volume calculation
Hi Josselin,
AimsVoiStats was primarily designed for 4D activation maps. On a single 3D image, the time stats should be quite meaningless. The mean and fixed-time stdDev are calculated on the grey levels on the regions, so they are meaningfull.
Denis
AimsVoiStats was primarily designed for 4D activation maps. On a single 3D image, the time stats should be quite meaningless. The mean and fixed-time stdDev are calculated on the grey levels on the regions, so they are meaningfull.
Denis
Re: volume calculation
Hi,
Thanks. Is the volume resuls given in mm3 or in voxels ?
Josselin
Thanks. Is the volume resuls given in mm3 or in voxels ?
Josselin
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Re: volume calculation
It's in mm3.
Denis
Denis