Lead foil in dental X-ray film: Backscattering rejection or image intensifier?

Hönnicke, Marcelo Gonçalves; Delben, G. J.; Godoi, Walmor Cardoso; Swinka-Filho, V.

doi:10.1016/j.nima.2014.06.015

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2017

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Cited by 2 publications

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“…This problem is partly similar to that of X-ray films in conventional imaging; the low thickness of the film reduces its X-ray absorption efficiency. In the case of these films, two lead foils are placed on both sides of the film to intensify the output image and also to reduce the effect of the backscattered photons from the object [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Lead foil wrapping of the plastic scintillators for the gamma ray detection: optical reflector or spectrum intensifier?

2017

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This paper studies the effect of lead wrapping on the response of the plastic scintillators as gamma detectors. Experimental tests and Geant4 simulations showed that lead wrapping cannot increase the gamma absorption efficiency of the detector but, as a reflector, it can improve the optical properties of the detector. The reflectivity of the lead foil as an optical reflector was determined equal to 66% using an experimental-simulation combined method. Based on the obtained results, the optical collection efficiency of the detector was also increased about 4% after employing the lead reflector.

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Section: Introductionmentioning

confidence: 99%