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Forum: Medical Applications
Re: Question Statistical uncertainties in hadrontherapy (Ix-Berenice Garcia Ferreira)
Date: 21 Jul, 2009
From: G.A.P.Cirrone <G.A.P.Cirrone>

Dear User,

at moment in hadrontherapy does not exsist a method to calculate the statistical error of deposited dose. A correct way to proceede is to perform a certain number of runs with different seed number and then calculate the statistical error in each voxel.

A minimum of 5 runs (much better at least 10) are required for a meaningful evaluation of the statistical error. For example, instead of doing 2 runs of 1,000,000 each, you could have done 10 runs of 200,000 In that case you would have used the same CPU time, the results would have been exactly the same (for the same initial random numbers) as for the 2, 1,000,000 each, runs, but statistical errors could have been different and surely better estimated.

I hope that in the future we can add an automatic way to perform a such calculation for dose also connected with some biasing technique

Pablo Cirrone

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1 Note: Re: Statistical uncertainties in hadrontherapy   (Valery Taranenko - 21 Jul, 2009)
1 None: Re: Statistical uncertainties in hadrontherapy   (Christina Zacharatou - 21 Jul, 2009)
2 None: Re: Statistical uncertainties in hadrontherapy   (G.A.P.Cirrone - 21 Jul, 2009)
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