Talk:Fast neutron therapy

note

What about the normal tissue complications that are more prevalent with Neutron therapies compared to photon therapies? This has been ignored.

What about them indeed. Complications are a clinical outcome. Although efficacy is stated, and claimed by various references, I include no data on outcomes.

This part of the article doesn't make sense: "The presence of oxygen in a cell acts as a radiosensitizer , making the effects of the radiation more damaging. Tumor cells typically have a lower oxygen content than normal tissue. This medical condition is known as tumor hypoxia and therefore the oxygen effect acts to increase the sensitivity of tumor tissue.[8]"

IF: tumor cells have LOWER oxygen content AND IF: the PRESENCE of oxygen in a cell acts as a radioSENSITIZER {so, in effect REDUCED oxygen supply would make the cell 'radioINSENSITIVE'} THEN: tumor cells would be LESS sensitive to radiation, not MORE sensitive {since they have REDUCED oxygen supply}

I even found it HERE: http://en.wikipedia.org/wiki/Tumor_hypoxia, specifically: "Tumor hypoxia is the situation where tumor cells have been deprived of oxygen. As a tumor grows, it rapidly outgrows its blood supply, leaving portions of the tumor with regions where the oxygen concentration is significantly lower than in healthy tissues. Hypoxic tumor cells are usually resistant to radiotherapy and chemotherapy[1]..." —Preceding unsigned comment added by 71.139.186.169 (talk) 03:07, 21 December 2010 (UTC)

X-ray energies

In regards to the x-ray energy " 1 -25 MeV ", This might just be a typo, however this isn't correct. Perhaps one meant the total energy incident upon the biological material adds up to 1-25 MeV which is still quite high. Reason for this is the x-ray source target material will always have a characteristic emission wavelength on the range of 10 keV. The highest energy x-ray that can be produced is characteristic of Uranium with an energy of roughly 114.5 keV in the Kβ emission spectra. — Preceding unsigned comment added by 216.223.232.188 (talk) 17:32, 23 May 2014 (UTC)

Neutrons fron reactors??

The present introduction starts "Fast neutron therapy utilizes high energy neutrons typically between 50 and 70 MeV to treat cancer. Most fast neutron therapy beams are produced by reactors, (...)" No. The maximum neutron energy from a reactor is about 10 MeV, at very low neutron flux. On average, the fast neutrons in a reactor (before they are moderated) have about 2 MeV. --UvM (talk) 16:12, 31 October 2015 (UTC)

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