Using thermopile as densitometer for measurement optical density for x-ray radiation film which used in dental medicine

Abstract EN

Aims : To encountered in using thermopile device (thermocouple) as densitometer for measuring optical density for X-radiation film which is used in dental medicine.

Materials and methods : Americium- 241 (Am-241) 59.5keV was used to expose a number of dental X-ray films for different times to end with a variety of optical densities on them.

Results : A comparison of the optical density readings between the densitometer and thermopile was made.

Conclusions : The thermopile was capable to measure the optical density of any transparent polymer material while the densitometer can measure the optical density of the X-ray film only.