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British Journal of Radiology (1986) 59, 1171-1173
© 1986 British Institute of Radiology
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The British Journal of Radiology, Vol 59, Issue 708 1171-1173, Copyright © 1986 by British Institute of Radiology

ARTICLES

The radiation dose to the lens in radiology of the orbit

A Montanara, R Pani, R Pellegrini, NS Polli and S Soluri

This paper describes research into measurement and reduction of the radiation dose to the lens during various examinations, namely skull and orbit, optic canal and optic strut, superior and inferior orbital fissure, localisation of foreign bodies in the eye, calcifications, orbital fractures, macrodacryography and orbital venography. Using rare-earth screens and high-sensitivity films, without an antiscattering grid, and with an added filtration of 0.5 mm Cu, it is possible to reduce the radiological risk during all investigations involving skull, orbit and eyeballs, while maintaining a good image quality. Particularly in those examinations with direct magnification (macrodacryography and venography, foreign bodies in the eye, orbital fractures), the dose to the lens is very low: less than 0.2 mGy/radiograph.




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