how to make blood vessel model from 3d points

i want to make a blood vessel model with 15 groups of x y z points by making a points for every 15 dicom view ( mri )

So, I composed and expressed the points and the triangular face of each point manually with polydata, but it is not smooth.

like this

so i want make like this smooth faces
스크린샷 2022-06-16 오전 12.08.30

Is it possible to take 15 (z) slice points (x,y) vtkpoints and express smooth surface?

sorry my english is short

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