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Radiation Protection Dosimetry 2005 114(1-3):143-146; doi:10.1093/rpd/nch537
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org

Skin dose measurements on patients for diagnostic and interventional neuroradiology: a multicentre study

L. Struelens1,*, F. Vanhavere1, H. Bosmans2, R. Van Loon3 and H. Mol4

1 SCK-CEN, Belgian Nuclear Research Centre, Boeretang 200, 2400 Mol, Belgium
2 UZ-GHB Leuven, Radiology Department, Herestraat 49, 3000 Leuven, Belgium
3 VUB, Pleinlaan 2, 1050 Brussel, Belgium
4 EHSAL: European Institute of Higher Education, Department Medical Imaging, Nieuwland 198, 1000 Brussel, Belgium

* Corresponding author: lstruele{at}sckcen.be

The present study reports on the skin dose measurements on patients undergoing diagnostic and interventional neuroradiology procedures. Grids of thermoluminescence dosemeters were attached on the head of the patient. The exposure parameters of the X-ray systems and the clinical procedures were fully documented. While for the diagnostic procedure, the dose threshold of 2 Gy for deterministic effects was not reached, this situation was much different for the embolisations. For angiography of the carotid arteries, no skin doses were measured >320 mGy. For the cerebral embolisations, maximum skin doses up to 5.4 Gy were measured. Doses to the patients varied largely between different hospitals and within the same hospital for similar procedures. On the one hand, the complexity of the pathology for interventional procedures was responsible for the large variability in dose. On the other hand, large differences in clinical protocol and technical parameters of the X-ray systems, explaining the dose variations, were also observed. A correlation was found between the maximum skin dose measured on a patient and the total dose–area product (DAP) value for cerebral embolisations. This correlation makes it possible to estimate the maximum skin dose from these DAP values and to determine a trigger level. In conclusion, management of patient doses in interventional radiology requires training, specialisation and well-documented procedure guidelines.


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