Absorbed doses reduced by the use of rare-earth intensifying screens in rotational panoramic radiography with constant potential generator

Charge-coupled device panoramic radiography: effect of beam energy on radiation exposure.

“…24,25 Skoczylas et al 25 showed that dose to critical organs StenstroÈ m et al 13 calculated the energy imparted in the parotid region was approximately 25% lower with a constant potential machine (kVcp) compared with a self-recti®ed (kVp) unit. Hayakawa et al 26 showed that dose reductions can be achieved by increasing the beam energy to 80 kVcp and above due to improvement in the sensitivity of the rare earth screens. A similar phenomenon could be expected with the DigiPan 1 as it incorporates a rare earth scintillator.…”