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Staff Radiation Doses to the Lower Extremities in Interventional Radiology

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Abstract

The purpose of this study was to investigate the radiation doses to the lower extremities in interventional radiology suites and evaluate the benefit of installation of protective lead shielding. After an alarmingly increased dose to the lower extremity in a preliminary study, nine interventional radiologists wore thermoluminescent dosimeters (TLDs) just above the ankle, over a 4-week period. Two different interventional suites were used with Siemens undercouch fluoroscopy systems. A range of procedures was carried out including angiography, embolization, venous access, drainages, and biopsies. A second identical 4-week study was then performed after the installation of a 0.25-mm lead curtain on the working side of each interventional table. Equivalent doses for all nine radiologists were calculated. One radiologist exceeded the monthly dose limit for a Category B worker (12.5 mSv) for both lower extremities before lead shield placement but not afterward. The averages of both lower extremities showed a statistically significant dose reduction of 64% (p < 0.004) after shield placement. The left lower extremity received a higher dose than the right, 6.49 vs. 4.57 mSv, an increase by a factor of 1.42. Interventional radiology is here to stay but the benefits of interventional radiology should never distract us from the important issue of radiation protection. All possible measures should be taken to optimize working conditions for staff. This study showed a significant lower limb extremity dose reduction with the use of a protective lead curtain. This curtain should be used routinely on all C-arm interventional radiologic equipment.

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Authors and Affiliations

  1. Department of Radiology, Beaumont Hospital, Beaumont Road, Dublin 9, Ireland

    C. P. Shortt, H. Al-Hashimi, L. Malone & M. J. Lee

Authors
  1. C. P. Shortt
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  2. H. Al-Hashimi
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  3. L. Malone
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  4. M. J. Lee
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Correspondence to M. J. Lee.

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Shortt, C.P., Al-Hashimi, H., Malone, L. et al. Staff Radiation Doses to the Lower Extremities in Interventional Radiology. Cardiovasc Intervent Radiol 30, 1206–1209 (2007). https://doi.org/10.1007/s00270-007-9071-0

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  • DOI: https://doi.org/10.1007/s00270-007-9071-0

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