Pediatric Phantom Dosimetry of a Portable Handheld X-ray Device.

The purpose of this study was to quantify radiation dose from the XTG (Xray2Go) handheld X-ray device for bitewing and maxillary anterior occlusal projections using a pediatric phantom. The aim was to evaluate effects of thyroid shielding on total effective dose (E) and tissue equivalent doses (HT) and assess operator backscatter radiation. Methods:A pediatric phantom head with 24 tissue site dosimeters was exposed to radiation from the x-ray device. Exposures included: (1) right and left bitewing (BW) without thyroid collar on phantom, (2) BW with thyroid collar, (3) maxillary anterior occlusal (AO) without thyroid collar, (4) AO with thyroid collar. With each exposure type, new dosimeter sets were used and 30 exposures completed. The operator wore dosimeters on the forehead and right hand to quantify backscatter radiation. Average values of HT and E were calculated. Conclusions: Thyroid shielding made a statistically significant difference for radiation dose with the Xray2Go for BW projections at specific tissue sites, including the thyroid, lymph nodes, and muscle, and for overall effective dose. Radiation to the operator from the device was very low and indistinguishable from background radiation.