[Gate-users] Radiotherapy applications: Calibrating MC simulations: i.e. absolute dose to monitor Units factor

[Nils Krah]

 Monitor units are a hardware parameter specific to the radiotherapy machine. So you need measured data for the machine you want to simulate. I would check what measurements are/were for commissioning the machine and possibly for quality assurance and mimic that in the Gate simulation. Typically this will be some sort of dose measurement. The ratio of measured and simulated dose tells you how to scale the number of primaries to match the MU. Check for papers on Monte Carlo simulations of radiotherapy system. You should find more details. The specific approach on your facility and their procedures.  
 
Hope that helps
 
Best,  
 
Nils
 
 
 
   
 

 
 
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> On Mar 4, 2021 at 6:45 PM,  <G Tom (mailto:gregthom992 at gmail.com)>  wrote:
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> Hi all,
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> I wondered if anyone has a procedure on how to "calibrate" the MC simulation for comparison with a treatment planning system which uses monitor units instead of number histories.
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> Also please let me know any relevant documentation for this.
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> Thanks
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> GT
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