Energy of the secondary electrons in soft tissue from MV beams

Summary:

Could anyone please give me the references for the 6 MV data in your section 8.3.2 "Descriptors Of Dose Distribution Photon Beam Charts

Energy of the secondary electrons in soft tissue from MV beams

avisioli 19 Jul 2015 22:56

Hello, I am writing from London but trained at the PeterMac. I am trying to work out what happens in tumour when hit by 4 - 6 MV beam in the presence of gold nanoparticles. Hence my interest in section 8.3.2 (webpage above) where it appears that the average secondary electron liberated by 6 MV photon has 1- 2 MeV. Could anyone please give me the references where all this data (energy of secondary electrons page 8.3.2 ONLY) comes from, as I need to quote it for possible PhD presentation. Many thanks for your hep and any input.

Re: Energy of the secondary electrons in soft tissue from MV beams

AAM 20 Jul 2015 05:16

Hello Andrew,

My recollection is that the 1.2MeV average/mean comes from the spectrum of probabilistic energies of accelerated electrons. Now that you ask, it is definitely true for photons, but I can't ever recall a curve for electrons. specifically. Others might have a more specific answer.

Andrew Miller

Re: Energy of the secondary electrons in soft tissue from MV beams

avisioli 27 Jul 2015 19:41

Dear Andrew, thanks for trying to help me out. Yes in that webpage is quoted: "where it appears that the average secondary electron liberated by 6 MV photon has 1-to 2 MeV" and I have looked at Johns & Cunningham where similar calculations have been done, but cannot find anywhere where the above data came from. May thanks anyway A Visioli