Radiation dose measurements to the eyes during cerebral angiography

Published on Jun 1, 1976in British Journal of Radiology3.039
· DOI :10.1259/0007-1285-49-582-570
C. Christine Smith1
Estimated H-index: 1
Haydn Williams6
Estimated H-index: 6
G. H. Du Boulay26
Estimated H-index: 26
Recent interest in radiation dose to the cornea during neuroradiological investigations (Isherwood et al., 1975) prompted us to test our own figures during cerebral angiography. Thermoluminescent dosemeters (TLD) appropriately marked right and left were placed over the eyes of patients undergoing cerebral angiography. Our equipment consists of 24 × 30 cm Puck film-changers with Siemens Special Super High Speed screens and a Siemens Tridoros 5S generator.
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Radiation dose measurements suggest that patients undergoing extensive neuroradiological investigations may receive a corneal dose in excess of 60 rads in tissue over a relatively short period. — There is no direct evidence that lens damage occurs in man at this level but it is important that high dose levels should be appreciated and measures taken to reduce them. Protective spectacles have been devised to effect such a reduction in two high dose procedures, namely petrous tomography and cerebr...
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SUMMARY The use and benefits of a corneal shield specifically designed for use in cerebral angiography is discussed. It is shown that up to 70% reduction in dose may be achieved to the cornea on the ipsilateral side without loss of diagnostic information unless the suspected pathology lies within the eye, the orbit or the anterior fossa of the temporal lobe.
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