These problems are low energy photon and its thin glare was mainly used to in the past, but not matter greatly in the recent industrial x-ray Flash in the body becomes a problem.
These problems did not matter greatly in the past was used mainly for low-energy photons and hence the thin scintillator is a problem in recent years of industrial X-ray scintillator.
the problem is that the energy of the photon, and according to the use of thin light mainly in the past is not a problem, but in recent years, industrial x-ray flash itself, become a problem.