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None Re: some mistake in PDD curve only in the build-up region  

Forum: Medical Applications
Re: Question some mistake in PDD curve only in the build-up region (Jaafar EL Bakkali)
Re: None Re: some mistake in PDD curve only in the build-up region (Youming Yang)
Re: None Re: some mistake in PDD curve only in the build-up region (Jaafar EL Bakkali)
Re: None Re: some mistake in PDD curve only in the build-up region (Youming Yang)
Re: None Re: some mistake in PDD curve only in the build-up region (Jaafar EL Bakkali)
Date: 24 Jun, 2012
From: Youming Yang <Youming Yang>

Ahh that's good, is your issue resolved then?

Is the mean energy of the electron beam value you use to obtain the ~2% deviation a physically sane value?

Ming

On Sun, 24 Jun 2012 07:23:39 GMT, Jaafar EL Bakkali wrote:

> Hi Ming,
> 
> I'm using the PDD from the commissioning of a Linac , it's seems that
> the wrong values in the build-up region come from the model of the
> electron beam hitting the target, especially mean energy, so with a
> certain value of mean energy I can get less than 2% a different between
> experimental and simulated values in the build-up region.
> 

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1 None: Re: some mistake in PDD curve only in the build-up region   (Jaafar EL Bakkali - 24 Jun, 2012)
(_ None: Re: some mistake in PDD curve only in the build-up region   (Youming Yang - 24 Jun, 2012)
(_ None: Re: some mistake in PDD curve only in the build-up region   (Jaafar EL Bakkali - 26 Jun, 2012)
(_ None: Re: some mistake in PDD curve only in the build-up region   (Youming Yang - 01 Jul, 2012)
(_ None: Re: some mistake in PDD curve only in the build-up region   (Jaafar EL Bakkali - 03 Jul, 2012)
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