help > RE: VOI in mm cube?
Apr 9, 2021  02:04 AM | alexpcg10
RE: VOI in mm cube?
Hi Chris,

Thanks for the response. I'm actually calculate the infarct volume of the animal after inducing stroke.

Is there any video available showing how to calculate the precise volume?

I am a bit confused with what you have mentioned in the previous post, otherwise could you please show me the working on how can I get the precise volume?

So I used MRIcroGL for my analysis, and these are the value shown in the header of each images:
I1:-0.480432x-0.218863x4.35898mm (53x20x21)= 0.348061
I2:-0.429688x-0.192176x3.86228mm (53x20x20)= 0.6656362
I3:-0.378944x-0.165489x3.36558mm (53x20x19) = 0.250943
I4:-0.328199x -0.138802x 2.86888mm (53x20x18) = 0.320685
I5:-0.277455x -0.112115x 2.37218mm (53x20x17)= 0.194236
I6: -0.226711x-0.0854282x1.87548mm (53x20x16)=0.81149

And here is the descriptive of all the highlighted area from the images above:
Background image: 7_6_T2_20210324105011_70001
Drawing Center of mass XYZvox 102.17x38.28x14.58
Drawing Center of mass XYZmm 4.33x2.61x1.77
Background image: 7_6_T2_20210324105011_70001
Drawing VOI nvox(cc)=min/mean/max=SD: 6733 0.03 = 0.3754 10.6360 16.2363 = 2.0323
Drawing VOI <>0 nvox(cc)=min/mean/max=SD: 6733 0.03 = 0.3754 10.6360 16.2363 = 2.0323
Drawing VOI >0 nvox(cc)=min/mean/max=SD: 6733 0.03 = 0.3754 10.6360 16.2363 = 2.0323

Is this mean I will take -0.480432*-0.218863*4.35898mm * 6733 to get the VOI for image 1, -0.429688*-0.192176*3.86228mm * 6733 to get the VOI for image 2, and so on, then I add the total value together to get the VOI for the whole infarct volume?