Keywords:
Dosimetry, Digital radiography, Radioprotection / Radiation dose, Dosimetric comparison
Authors:
E. Alukić, N. Mekis; Ljubljana/SI
DOI:
10.1594/ecr2018/C-2413
Aims and objectives
Although the radiation dose levels in dental radiography are low,
exposure to radiation should be reduced whenever possible.
One of the options to reduce radiation dose to the patient is to reduce the size of the primary imaging field [1,2].
In dental radiography,
circular and rectangular beam-indicating device (BID) are used,
whose form of collimation is the same as their shape [3,4].
According to the literature [1-5] a rectangular BID with rectangular collimation or an additional rectangular collimation attached to a circular BID reduces the dose of ionizing radiation,
received by the patient,
up to 70%,
compared to a circular collimation.
According to the literature,
rectangular collimation is used also to improve image quality [6].
An official report of the American Academy of Oral and Maxillofacial Radiology pointed out that the value of use leaded aprons is minimal compared to the use of a rectangular aperture [7,8].
The aim of the study was to determine how rectangular collimation in intraoral dental radiography in comparison to the circular collimation effects the dose area product (DAP).