[Insight-users] optimization of Active countour

[yasser salman]

Dir sir,
I am using GeodesicActiveCountor filter to segment the
Tumor Region in 3D brain volume and calculated the
number of pixels inside this segmented region, When I
change the seed point (inside the ROI) the number of
pixels Changes(5-10%) is it ok?
, Also the result summed from each 2D slices is not
equal to result in 3D segmentation and calculation
(2-8%),  I  am keep  trying to optimize my
parameters manually to be closely match the manual
segmentation and calculation  but it takes much time
 also it depends of the tumor Shapes  so how 
the operator will know the best and optimum parameters
values to get the true volume calculations in the
tumor
region. at the end is Region growing is accurate more
than Active countor in tumor volume segmentation
speacially in homogenous Regions?? Thanks all,
Yasser salman 




	
		
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