x線は照射方向を増やすことで正常細胞への照射量が減るのでよいといわれているが
この主張には疑問がある。（γナイフでも同様）
主要への線量の総和とくらべて照射線量の正常細胞部への線量線密度がたしかに減少するが人体への
照射線の総量は増えていることになる。人体は余分な照射総量に悪い反応をしないだろうか？
常識に疑問を持て！
以下はそういう議論；
I personally have a question that noboday considered a total dose to a normal
tissue. The total dose of photon is much larger than that of proton.
In photon photons are disributed in large volume. This should give
some effect to a body. But this effect has never been discussed. The
tola dose of carbon is smaller than that of proton because of the RBE
effect.
There is another effect called bystander effect. I don't know how it
differs for photon,proton, and carbon. This should give an effect to
a total dose.
Medical doctor at HIMAC have been not trying to compare a clinical
outcome of proton and carbon. I don't know why. They are just ignoring
proton. Medical doctor having proton facility says both are the same.
So far nobody showedh the data of prostate cancer like I did.
Americans have been also trying to ingnore carbon outcome for a long time.
Even in a PTCOG, ameticans were reluctan to make a comparison study.
Much remains to study.
この観点から回転ガントリーが万能とはいえないことに注意する必要がある。